gus = aN a Nv H lode A VOLUME 78 Number 2 Journal of the June, 1988 WASHINGTON ACADEMY ., aaa ISSN 0043-0439 sys ow Issued Quarterly ; at Washington, D.C. Nuclear Radiation and Public Health Practices and Policies in the Post-Chernobyl World A Symposium at Georgetown University Proceedings Edited By: Dr. Irving Gray and Dr. Kenneth L. Mossman Washington Academy of Sciences Founded in 1898 EXECUTIVE COMMITTEE President Ronald W. Manderscheid President-Elect James E. Spates Secretary Darlene V. Howard Treasurer R. Clifton Bailey Past President Simon W. Strauss Vice President (Membership Affairs) Guy S. Hammer, II Vice President (Administrative Affairs) Armand B. Weiss Vice President (Junior Academy Affairs) Marylin F. Krupsaw Vice President (Affiliate Affairs) Joann Langton Academy Members of the Executive Committee M. Sue Bogner Robert H. McCracken Affiliate Members of the Executive Committee George Abraham Jo-Anne A. 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Second class postage paid at Arlington, Va. and additional mailing offices. CONTENTS RENNETH E MOSSMAN. Ph. D:lntroduetiony & 5.452 aec ces ss: ARTHUR C. UPTON, M.D.: Health Effects of Nuclear Radiation: Intro- PCARVaICCHIALKS ANG OVEIVIEW. Gar cern ieee cise. Ae Gate Fac ed oe 4 oie as NIEL WALD, M.D.: Acute Radiation Injuries and Their Management ROBERT W. MILLER, M.D., Ph.D.: Prenatal Effects of Exposure to Ion- PEMA BERANE se tis cc nc a Roane eatin) Sos Aces dose Bay eens tee Nt oa GILBERT W. BEEBE, Ph.D.: Carcinogenic Effects of Nuclear Radiation SEYMOUR ABRAHAMSON, Ph.D.: Genetic Effects of Nuclear Radia- TRAE enn ae o Pate Rey ela, ep aeba, MMS al ted PSs i MEE Bey cae BOUND TABLE DISCUSSION: BIOMEDICAL ISSUES. ............. HERBERT KOUTS: Nuclear Power: How Safe Is It? How Safe Should It Beri hors k Be gras BF SL th aes POR UA ERE ED Mw | Me ore eS eat e) Ma Oe TieCiAM KERR: Chernobyl— lessons Leamed ...205. 1c ee es hese PETER A. BRADFORD: Somewhere Between Ecstasy, Euphoria and the SHEcdderRetlections,Onyuhe Penm jae FO-NUGIEAal jon)... 65.5 cts ceo lat j.< BYRON LEE: Jr: Industry Evaluation and’ Response <...::....:-.- 2... ROUND TABLE DISCUSSION: ENVIRONMENT AND ENGINEER- Ge ee ee i eee ca Rea acl lane PEC cl oye, Examination at the age of 17-18 years showed that the frequency of plaques among the in utero group in- creased as the dose increased. Uncer- tainty about the dosimetry when the study was made in 1968 prevented a comparison between Hiroshima and Nagasaki from being made. None of the subjects had im- paired vision due to the plaques, and none had true cataracts. The Future The effects of exposure on the health of persons exposed in utero are continu- ously in need of reevaluation. The fre- quency of neoplasia will be of primary interest. Presumably the same cancers that have occurred with increased fre- quency in older cohorts of atomic-bomb survivors will occur excessively among those exposed in utero. Rates similar to those of older cohorts, will not support the claim that intrauterine exposure to di- agnostic radiation increases the frequency of cancer in childhood. Effects on intelligence of the group ex- posed at 8-15 weeks of gestational age need to be evaluated to determine if deficiencies less than severe mental re- tardation can be defined. The Koga intelligence test results from 1955 need follow-up by more sophisticated contem- porary test procedures. If possible, new diagnostic imaging techniques should be performed on persons with severe mental PRENATAL EFFECTS 99 retardation to determine if abnormalities occurred in accord with the current ex- planation for radiation-induced mental deficiency based on animal experimen- tation. Head circumference, a most sensitive measure of an intrauterine radiation ef- fect, is of great interest with regard to the exposure at Chernobyl. As yet the Sovi- ets, who presumably made these mea- surements, have not made public their findings. If the dose was large enough (10-19 cGy) to compare with the findings in Hiroshima, and no effect was found in the Soviet Union, current standards for radiological exposure of the embryo or fetus will have to be reconsidered. A pos- sible implication of a difference between the two studies is that other environmen- tal circumstances in Hiroshima from the bomb or war combine with radiation ex- posure to produce an effect different from that in a medical radiology unit. The study made in 1968* that showed chromosomal abnormalities even after first trimester exposure to the atomic bomb needs to be reevaluated using con- temporary techniques. A wide array of other observations, too numerous to men- tion here, would also be informative as the in utero cohort moves through its full life-span. References Cited 1. Dunlap, C. E. 1942. Effects of radiation on blood and hemopoietic tissues, including spleen, thymus and lymph nodes. Arch. Path. 34: 562-608. 2. Stewart, A., J. Webb, D. Giles and D. Hewitt. 1956. Malignant disease in childhood diagnostic irradiation in utero: Preliminary communica- tion. Lancet 2: 447. 3. Fisher, W. D., M. L. Voorhess and L. I. Gard- ner. 1963. Congenital hypothyroidism in infants following maternal '"I therapy. J. Pediatr. 62: 132-146. 4. Yamazaki, J. N., S. W. Wright and P. M. Wright. 1954. Outcome of pregnancy in women exposed to the atomic bomb in Nagasaki. Am. J. Dis. Child. 87: 448-463. 5. Shiota, K., C. Uwabe and H. Nishimura. 1987. High prevalence of defective human embryos 10. lk. 12. 13: 14. 1S: 16. Ie 20. at the early postimplantation period. Teratology 35: 309-316. . Plummer, G. 1952. Anomalies occurring in chil- dren exposed in utero to the atomic bomb in Hiroshima. Pediatrics 10: 687-693. . Miller, R. W. 1956. Delayed effects occurring within the first decade after exposure of young individuals to the Hiroshima atomic bomb. Pe- diatrics 18: 1-18. . Wood, J. W., R. J. Keehn, S. Kawamoto and K. G. Johnson. 1967. The growth and devel- opment of children exposed in utero to the atomic bombs in Hiroshima and Nagasaki. Am. J. Public Health 57: 1374-1380. . Miller, R. W. and W. J. Blot. 1972. Small head size after in-utero exposure to atomic radiation. Lancet 2: 784-787. Blot, W. J. and R. W. Miller. 1973. Mental retardation following in utero exposure to the atomic bombs of Hiroshima and Nagasaki. Ra- diology 106: 617-619. Miller, R. W. and J. J. Mulvihill. 1976. Small head size after atomic irradiation. Teratology 14: 355-358. Otake, M. and W. J. Schull. 1984. In utero ex- posure to a-bomb radiation and mental retar- dation: A reassessment. Brit. J. Radiol. 57: 409-414. Roesch, W. C., ed. U.S.-Japan Joint Reassess- ment of Atomic Bomb Radiation Dosimetry in Hiroshima and Nagasaki. Radiation Effects Re- search Foundation, Hiroshima 1987, pp. 390- 392: Task Group of Committee 1, International Commission on Radiological Protection. 1986. Developmental effects of irradiation on the brain of the embryo and fetus. Ann. ICRP 49: 1-43. Schull, W. J. and M. Otake. 1985. The central nervous system and in utero exposure to ion- izing radiation: The Hiroshima and Nagasaki experiences. In: Epidemiology and Quantitation of Environmental Risk from Radiation and Other Agents. A. Castellani, ed. Plenum Press, New York, pp. 515-536. Miller, R. W. 1987. Radiation biology needs physicians. The Scientist 1: 11. Brent, R. L. 1979. Effects of ionizing radiation on growth and development. Contr. Epidemiol. Biostat. 1: 147-183. . Stewart, A., J. Webb, J. and D. Hewitt. 1958. A survey of childhood malignancies. Br. Med. J. 1: 1495-1508. . MacMahon, B. 1962. Prenatal x-ray exposure and childhood cancer. J. Natl. Cancer Inst. 28: 1173-1191. Monson, R. R. and B. MacMahon. 1984. Pre- natal x-ray exposure and cancer in children. In: Radiation Carcinogenesis: Epidemiology and Biological Significance. J. D. Boice, Jr. and J. F. Fraumeni, Jr., eds. Raven Press, New York, pp. 97-105. . 100 Dalle DD, 48), 24. aS), 26. Pe ROBERT W. MILLER Ichimaru, M., T. Ohkita and T. Ishimaru. 1986. Leukemia, multiple myeloma, and malignant lymphoma. Gann Monogr. Cancer Res. 32: 113-127. Graham, S., M. L. Levin, A. M. Lilienfeld, L. M. Schuman, R. Gibson, J. E. Dowd and L. Hempelmann. 1966. Preconception, intra- uterine, and postnatal irradiation as related to leukemia. Natl. Cancer Inst. Monogr. 19: 347- Sik. Schull, W. J., M. Otake and J. V. Neel. 1981. A reappraisal of the genetic effects of the atomic bombs: summary of 34-year study. Science 123: 1220-1227. Harvey, E. B., J. D. Boice, Jr.. M. Honeyman and J. T. Flannery. 1985. Prenatal x-ray expo- sure and childhood cancer in twins. New Engl. J. Med. 312: 541-545. MacMahon, B. 1985. Prenatal x-ray exposure and twins. New Engl. J. Med. 312: 576-577. Miller, R. W. 1986. Genes, syndromes and can- cer. Pediat. Rev. 8: 153-158. Miller, R. W. 1988. Epidemiology and environ- mental causes of childhood cancer. In: Princi- ples and Practice of Pediatric Oncology. P. A. Pizzo and D. G. Poplack, eds., Lippincott. Phil- adelphia, in press. sh, 2S) 30. oil, Sy), 333 Tokunaga, M., C. E. Land, T. Yamamoto, M. Asano, S. Tokuoka, E. Ezaki and I. Nishimori. 1984. Breast cancer among atomic bomb sur- vivors. In Radiation Carcinogenesis: Epide- miology and Biological Significance. J. D. Boice, Jr. and J. F. Fraumeni, eds., Raven Press, New York, pp. 45-56. Conard, R. A., D. E. Paglia, P. R. Larsen et al. 1980. Review of medical findings in a Mar- shallese population twenty-six years after acci- dental exposure to radioactive fallout. Brookhaven National Laboratory report BNL 51261. (Brookhaven National Laboratory, Up- ton, NY). Bloom, A. D., S. Neriishi and P. G. Archer. 1968. Cytogenetics of the in utero exposed of Hiroshima and Nagasaki. Lancet 2: 10-12. Rugh, R. 1952. Fetal x-irradiation and fertility. Proc. Soc. Exp. Biol. Med. 80: 388-395. Blot, W. J., Y. Shimizu, H. Kato and R. W. Miller. 1975. Frequency of marriage and live birth among survivors prenatally exposed to the atomic bomb. Am. J. Epidemiol. 102: 128-136. Nefzger, M. D., R. J. Miller and T. Fujino. 1968. Eye findings in atomic bomb survivors of Hiroshima and Nagasaki: 1963-1964. Am. J. Epidemiol. 89: 129-138. Journal of the Washington Academy of Sciences, Volume 78, Number 2, Pages 101-116, June 1988 Carcinogenic Effects of Nuclear Radiation Gilbert W. Beebe, Ph.D. Clinical Epidemiology Branch, National Cancer Institute, Bethesda, MD 20892 ABSTRACT The expanding knowledge base for radiation carcinogenesis derives from an extensive experimental effort and increasing attention to the importance of human epidemiologic studies. The relation between dose and carcinogenic risk is described by means of math- ematical models without which low-dose estimates would be impractical. Aspects of the exposure situation that influence the dose-specific risk of cancer include dose-rate and fractionation, and the quality of the radiation. Organs and tissues vary widely in their susceptibility to the carcinogenic force of ionizing radiation, apparently without relation to natural incidence. The carcinogenic risk per unit of exposure also depends on a variety of host factors of which age at exposure is the most influential. Others include sex, race, genetic characteristics and, for breast cancer, reproductive history. Time after exposure dominates expression of radiogenic cancers. Typically there is a minimal latent period for a given type of radiation and site of cancer and a period of expression that may be modelled as a wave function for leukemia and as some multiple of natural incidence for most solid tumors. Although the evidence is limited there are a number of environmental influences and characteristics of lifestyle that may also affect the likelihood of cancer following exposure to ionizing radiation. Introduction Although ionizing radiation is capable of producing many, if not most, forms of cancer in man, there is no unique type of cancer so produced, and radiogenic cancers cannot be distinguished from normally occurring cancer of different etiology. The absence of a marker iden- tifying the cancer as radiogenic forces in- vestigators to employ statistical methods to determine whether a particular expe- rience may have given rise to an excess that may be considered radiogenic. Information on the carcinogenic effects 101 of exposures to ionizing radiation is ob- tained from both experimental and ob- servational studies. Experimental work involves chiefly mice, rats, dogs, and mammalian cells. Although the quanti- tative aspects obtained through animal experimentation may not be directly transferable to man, there is so much sim- ilarity between man and other mammals with respect to cancer that experimental research has made a great contribution to the understanding of radiation carcino- genesis in man. The necessarily observational human studies are built on diagnostic and ther- 102 GILBERT W. BEEBE apeutic exposures, occupational expo- sures, the bombing of Hiroshima and Na- gasaki, fallout from nuclear weapons tests, and differences in natural back- ground levels. Although the methods used in these studies may mimic those em- ployed in experimental work, there is a vast difference between them in the de- gree of control exercised by the investi- gator over the material. In consequence, no single study of radiation carcinogenesis in man can be taken as definitive, and knowledge in the field grows only as dif- ferent investigators gradually reach the same or similar conclusions. The literature on radiation carcinogen- esis is continually being reviewed by expert committees, especially those of the United Nations, the International Commission on Radiological Protection (ICRP), the U.S. National Academy of Sciences (NAS), the National Council on Radiation Protection and Measurements of the U.S. (NCRP), as well as other na- tional and international bodies. The ma- jor reports that are current, and major updates in process, include: UN, Scientific Committee on the Ef- fects of Atomic Radiation, 1977 (up- date expected in 1988) ICRP, Recommendations, ICRP 26, 1977 NAS, Committee on the Biological Ef- fects of Ionizing Radiation: 1980 BEIR Il report on low-dose expo- sure (update in work); 1987 BEIR IV report on alpha radiation NCRP, Recommendations, Report 91, 1987 and other more specialized re- ports, e.g., Report 88 on radon, 1986 The relationship between exposure to ionizing radiation and cancer is not simply that the risk depends on dose. It also de- pends on other characteristics of the ex- posure, e.g., the dose-rate and the type of radiation, on various characteristics of the exposed subjects, on the organs ex- posed, on time after exposure, and on Other risk factors that may be present in the environment or in the lifestyle of those exposed. Characteristics of Exposure How the carcinogenic response de- pends on dose is fundamental for predic- tion, and thus for radiation protection, and of some theoretical interest in regard to the nature of the carcinogenic process. Dose-response models have been pro- posed on the basis of microdosimetric considerations, but the response is prob- ably determined by far more than the in- itial biophysical events.' Nevertheless, biophysical considerations have served to rationalize the use of linear and linear- quadratic equations that do fit much of both the experimental and the human data on dose-response. In addition, the frequent observation in mammalian ex- periments of a downturn in the dose-re- sponse curve at high doses has led to a general belief that cell-killing may be re- sponsible. Figure 1, taken from the BEIR III report,’ displays in the upper left-hand panel a general linear-quadratic model of dose-response modified by an exponen- tial term to bring the curve down in the high-dose region. The other panels con- tain curves formed by dropping one or more terms from the general model. These models are especially important for low linear-energy-transfer (LET), low- dose risk estimation because low-dose risks are usually too small to be observed directly and must be estimated from an equation fitted to the relevant human data. A crucial issue, not yet fully resolved, is whether there may not be a threshold dose below which the risk of at least some forms of cancer disappears. For some ef- fects, e.g., sterility and cataracts, thresh- olds seem well established, but for cancer this is not the case and it is generally as- sumed, especially for purposes of radia- tion protection, that there is no threshold for cancer. Human data that suggest the possibility of thresholds for certain forms of cancer following particular types of ra- diation include the absence of skin cancer in heavily pigmented skin? and the ab- sence of bone cancer following exposure RADIATION CARCINOGENESIS 103 general form cell killing attenuates F(D) Incidence Dose, D = 2 F(D) = a + a,D quadratic Incidence Dose, D F(D) = (a, +a,D +a,D7)exp(-6, D -6,07) @ 1S) Ss eS) ne) rs) £ Dose, D a3 2 F(D) =Q +a,D +a,D linear - quadratic i: 5) oO Cc ® ne) cE, iS Dose, D Fig. 1. Alternative Dose-response Curves. Source: BEIR III Report to low-LET radiation except in the high- dose range.* There must be negligibly small doses in the sense than any risk they may entail is quite small in relation to everyday risks assumed by most people without a second thought but, because both cancer and nuclear weapons are greatly feared, it is difficult for many to calibrate the risks from exposure to ion- izing radiation. Many people fail to un- derstand that they are exposed to ionizing radiation throughout life from cosmic and terrestrial sources, and even from radio- isotopes within the body. The average ex- posure of about 0.002 Sv (0.2 rem) per year, or 0.15 Sv (15 rem) per lifetime is well within the range that many people anguish over and for which damage suits are brought against the Federal Govern- ment by people with cancer. The lowest doses at which radiogenic cancers have been demonstrated statisti- cally are 0.09 Gy (9 rad) to the thyroid gland in the Israeli tinea capitis series,* under 0.15 Gy (15 rad) to the breast in the Japanese A-bomb survivors? and, al- though this is less certain, a few rad to the fetus in large studies of x-ray exposure of the fetus during pelvimetry.*’ Upton has recently summarized the experimen- tal evidence against the existence of a threshold dose for radiation carcinogen- esis.* } There are many studies of the effects 104 GILBERT W. BEEBE of exposure in the low-dose range, studies undertaken for scientific, public health, or even political, reasons but, apart from the exceptions noted above, they have all failed to provide any firm basis for direct estimates of the risk at low doses.’~” Their necessarily inconclusive nature has, however, fueled the considerable contro- versy over the magnitude of that risk. The most recent systematic compilation of risk estimates for radiogenic cancer ap- pears in the NIH report on the probability of causation,’ from which Table 1 is an excerpt for cancers of particular concern. Note that these are linear absolute risk coefficients per 100,000 persons per year per 0.01 Gy (1 rad) suitable for calcula- tions of cancer incidence following low- dose exposure. The rates that were ex- cerpted all happen to have been up-dated from the 1980 NAS BEIR III report but others, not shown, were taken directly from that report.’ All are linear coeffi- cients; even when the linear-quadratic dose response model is considered more suitable than the linear model, it is only the linear coefficient of the linear-quad- ratic equation that is used for low doses. For some sites and ages at exposure within sites the NIH Working Group was unable to provide estimates. Note that it is only for the breast and the thyroid gland that the linear model was used in Table 1 and in the source table. To the extent that risk coefficients have been based on the experience of the A- bomb survivors they will change as a re- sult of the joint US-Japan effort to revise the applicable dosimetry.*’ The magni- tude of the changes has become evident in recent months for leukemia and for all cancers combined except leukemia.” Figure 2 presents dose-response curves for leukemia contrasting the old (T-65D) and the new (DS86) dosimetries. The sec- ond T-65D curve for the DS86 cohort is included to show that the reduction in the original cohort necessitated by the lack of Table 1.—Absolute Excess Cancer Incidence per 100,000 Persons per Year per Rad (Organ Dose), at Low Levels of Low-LET Radiation, by Site, Sex and Exposure Age, Averaged over the Specified Follow- up Period. Exposure Years* Site Age Follow-up Leukemia 0-9 5-26 (all types 10-19 5-26 except CLL) 20-34 5-26 35-49 5-26 50+ 5-26 Lung 10-19 10=—33 20-34 10-33 35-49 10-33 50+ 10-33 Breast 0-9 10-35 10-19 10-35 20-29 10-35 30-39 10-35 40-49 10-35 50+ 10-35 Thyroid 0-9 10-34 10-19 10-34 20-34 10-34 35-49 10-34 50+ 10-34 Sex Dose-response Model M FE Linear-Quadratic MS .110 .0854 .0543 .0846 .0538 105 .0670 .156 .0990 Linear-Quadratic .030 .030 056 .056 086 .086 120 .120 Linear —_ 38 — .76 — .49 — .49 — HL) — .08 Linear lS 50 tS) 50 105 15 05 15 .05 tS “Observed years over which risk was averaged to produce the risk coefficients shown. Source: Rall et al.”° RADIATION CARCINOGENESIS 105 20. Excess Deaths/10% py Die esn va rs Dose Equivalent (RBE=10) to Bone Marrow (Sv) —S 3 4. 5. 6. Fig. 2. Excess Leukemia Deaths per 10* Person- Years (PY), A-bomb Survivors, 1950-1985, by Dose- Equivalent, DS86 vs. T-65D. Source: Preston and Pierce.” DS86 estimates for some members of the cohort has little effect on the dose-re- sponse curve. These curves are based on the dose equivalent to bone marrow with the quality factor for fast neutrons set at 10. The overall effect of the adoption of DS86 doses is to increase the linear ab- solute risk estimate for leukemia by an average of 80 percent. Figure 3 provides parallel curves for all cancers except leu- kemia, but on a relative risk scale. Be- cause individual doses had not yet been re-calculated for all organs under the DS86 system, the dose to the large intes- tine was used as a surrogate for the others. The average increase in risk on this basis is about 30 percent. If the quality factor for fast neutrons were set at 20, a value now recommended by the NCRP,”™ the average increases in linear risk coeffi- cients above the T-65D estimates would be 136 percent for leukemia and 72 per- cent for all solid tumors combined. Those who may have been using risk estimates from the A-Bomb experience expressed in terms of rads, 1.e., with an implicit RBE of 1, will see less change in the risk coefficients, the increase for leukemia being about 18 percent and that for all other cancers combined, —3 percent (22). In experimental work the rate at which radiation is delivered to target tissue has a major effect on the resulting yield of tumor.” The 1980 NCRP report on the effects of dose-rate on the carcinogenic effect of low-LET radiation recommends that low-dose estimates based on linear dose-response equations fitted to largely high-dose observations be divided by a factor between 2 and 10.” The carcino- 106 GILBERT W. BEEBE 2. Tele 3 oa @) = 2 1. (oS) om 4 (S) x Ww Os 0. 0. 1. 2. = DS&6 =o =.1650 ----- T650, OS86 Subcohort 3. 4, 5. Dose Equivalert (RBE=10) to Large Intestine (Sv) Fig. 3. Excess Relative Risk of Death from All Cancers except Leukemia, A-bomb Survivors, 1950- 1985, by Dose-Equivalent, DS86 vs. T-65D. Source: Preston and Pierce.” genic effect of exposure to high-LET ra- diation is generally thought to be less dependent on dose-rate than exposure to low-LET radiation. Ullrich et al. have shown, however, that the influence of dose-rate on the effect of neutrons is mixed, depending on the target tissue and the size of the dose.*” Human data pro- vide little evidence of a dose-rate effect, although most non-medical exposure is of the low dose-rate variety and some of the medical exposure is fractionated. The data on female breast cancer provide the only substantial human evidence on the dose-rate effect, for similar absolute risk coefficients derive from the high dose- rate experience of the A-bomb survivors, the highly fractionated exposure of tu- berculosis patients on collapsed lung ther- apy monitored by an average of about 100 fluoroscopic examinations, and the lightly fractionated exposure of mastitis patients treated by x ray.*® Since the large differ- ence in degree of fractionation of dose between the latter two U.S. series is ac- companied by little or no difference in either absolute or relative risk, the fact that the relative risk is very much higher for the A-bomb survivors is of consider- able interest but does not invalidate the conclusion that the absolute risk of breast cancer is insensitive to variation in dose- rate. The high relative risk among A- bomb survivors reflects the very much lower breast cancer incidence of Japanese women. The apparently greater effect, per unit of absorbed dose, of high-LET in com- parison with low-LET radiation has been amply demonstrated experimentally.” RADIATION CARCINOGENESIS 107 Relative biological effectiveness (RBE) ratios not uncommonly range well above 10 in experimental studies. Also, since high-LET dose-response curves tend to- ward linearity, while low-LET tend to- ward curvilinearity, RBE ratios often increase with decreasing dose. Human data for estimating RBEs for neutrons are lacking, now that the new DS86 dosimetry for the A-bomb survivors has so down- graded the neutron component of dose in Hiroshima as to have effectively removed the possibility of any realistic estimation of the RBEs for neutrons on the basis of Hiroshima-Nagasaki contrasts.” There are both low-LET and high-LET data on lung cancer, but the high-LET risk esti- mates are in terms of Working-Level- Months (WLM) and it is doubtful that their conversion to estimates per rad of alpha radiation to lung tissue is reliable enough to produce trustworthy RBE es- timates. Prevalent ideas about relative bi- ological effectiveness ratios are illustrated by the quality factors (Q) recommended by the International Commission on Ra- diological Protection (ICRP) in 1977: X rayS, gamma rays and electrons 1 neutrons, protons 10 alpha particles 20 Further, as noted above, the Q factor for neutrons is being reconsidered at the present time and the NCRP has published a recommendation that it be increased to 2074 Tissue Susceptibility As was seen in Table 1, the absolute risk coefficients for even the organs most affected by radiation vary greatly. The reasons for this apparent differential sen- sitivity are not known and are little in- vestigated. It is of more than passing interest that the variation among the sites for which estimates exist in no way par- allels that for their normal incidence. Ta- ble 2 contrasts BEIR III average sex- and site-specific risk coefficients and average U.S. incidence taken from the Third Na- tional Survey by the National Cancer Institute.*! Only for male lung cancer and female breast cancer are high risk coefficients matched by high incidence rates. Differentials in tissue _ sensitivity can be demonstrated in comparisons of absolute risk, as in Table 1, where the risk coefficients for both breast and thyroid cancer are well in excess of those for leukemia, or in comparisons of rela- tive risk where the risk coefficient for leukemia is well above those for breast and thyroid cancer. Thus the judgment as to differential sensitivity will some- times depend on the definition of the measure of risk. Omitted from the usual lists of sus- ceptible organs are brain and ovary for both of which there is now evidence of some sensitivity to the carcinogenic action of ionizing radiation. Multiple myeloma occupies an uncertain posi- tion among the radiogenic cancers,” as do the lymphomas for which the NIH Working Group found insufficient data upon which to base risk estimates. Skin cancer has long been known to be radiogenic but the NIH Group also found insufficient quantitative data for risk estimation. If skin cancer could have been included in Table 2 it also would have been a marked deviant, with a high natural incidence and a low risk coefficient. Cancers of a given organ are gen- erally described in terms of their cellular origin. Only for leukemia are there reasonably adequate data on the risk by cell type, and it is notable that one form of leukemia, common at older ages, seems definitely not to be respon- sive to radiation, namely, chronic lymphocytic leukemia. Other forms of can- cer that have not been found to be asso- ciated with radiation exposure include prostate, uterus, and small intestine. Nevertheless, it is generally suspected that, given sufficient dose, any form of 108 GILBERT W. BEEBE Table 2.— Average Linear Risk Coefficients for Various Forms of Cancer Induced by Low-LET Radiation and Average U.S. Incidence Rates, by Sex. Male Female Type of Cancer Coefficient* Incidencet Coefficient* Incidence+ Leukemia** Syl Bil 2.0 sh Thyroid 2 i 5.8 .50 Breast — — 5.8 7.4 Lung 3.6 2 39 1.4 Esophagus eS) “oi/ 3 .16 Stomach 5) MS) Llei/ .70 Intestine 1.0 S22 a 4.0 Liver 1) 133 a 14 Pancreas s) 12 1.0 7S Urinary organs 8 372 BS) 1.0 Lymphoma 65) Iba 3 AE Other Ms) 32 1.6 OG All sites 1529 4.7 Dat 27.0 *Excess incident cases per million persons per rad per year, age adjusted, from BEIR III report.’ +Cases per 10,000 per year, age adjusted, from NCI survey.” **Except chronic lymphocytic leukemia. human cancer might be produced by ir- radiation. Host Characteristics Age at exposure and sex are both associated with differentials in risk esti- mates, but there is a paucity of infor- mation on the influence of other host fac- tors, e.g., genetic constitution, immune competence, and hormone status, that might be expected to affect the risk of radiogenic cancer. Age at exposure exerts a particularly strong influence on average risk coefficients, as may be seen in Table 1. Those coefficients were calculated after excluding the first 5 or 10 years after ex- posure in recognition of the length of the minimal latent period. Since age at ex- posure apparently determines the mini- mal latent period before the radiogenic cancers first appear (Figure 4), generally at about the age when cancers normally begin to appear, the age-specific coeffi- cients in Table 1 carry both the influence of the length of the minimal latent period and the intrinsic effect of age at exposure on risk. At a given age at death, as in Table 3, groups exposed at younger ages tend to have higher risk coefficients than older groups once the age is reached at which cancer normally appears. For both leukemia and thyroid cancer there are significant sex differences in ab- solute measures of risk, males having the higher risk for leukemia and females for thyroid cancer. These sex differences tend to disappear, however, when relative measures of risk are calculated. Race has not seemed to be an impor- tant factor in the carcinogenic response to radiation. The fact that Blacks in the New York University tinea capitis series did not suffer from skin cancer, while those with fair skin had a marked excess, especially in areas of the skin exposed to sunlight, suggests that ionizing radiation and ultra violet radiation interact to pro- duce skin cancer in those whose skin is sensitive to ultra violet radiation.* The failure to find excess skin cancer among Japanese A-bomb survivors in the careful dermatologic survey in 1964-1966 may not depend on degree of pigmentation of the skin, for skin cancer has been re- ported following medical irradiation in Ja- RADIATION CARCINOGENESIS 109 | AGE ATBO9 ie) | 10-19 | ie) 20-34 30 35-49 50 + CUMULATIVE DEATH RATE / 1000 60 0-9 RAD 100+ RAD 1960 1970 1978 YEAR OF DEATH Fig. 4. Cumulative Deaths from Lung Cancer per 1,000 A-bomb Survivors 1950-1978, by Age in 1945 (ATB), Year of Death, and T-65 Dose. Source: Kato and Schull.* pan.** It may be explained in part by the apparently long minimal latent period for radiogenic skin cancer or, perhaps, by a higher threshold for radiogenic skin can- cer among the Japanese. Certain genetic diseases, especially the nevoid basal cell carcinoma syndrome and hereditary retinoblastoma, are known to predispose to radiation-induced cancer. According to the two-stage model of Knudson it is possible for the first, initi- ating, event to be an inherited defect and the second, promoting step, exposure to radiation.» Maternal history of breast cancer and numerous inter-related characteristics of the reproductive history have been shown to influence the risk of breast cancer. 110 GILBERT W. BEEBE Table 3.—Absolute Risk* by Age in 1945, A-bomb Survivors, 1950-1978 by Type of Cancer and Age at Death. Age at Death Age in 1945 <30 30-39 40-49 50-59 60-69 70+ (a) All cancer except leukemia <10 1:22 4.35 13.41 — — os 10-19 — NZ 4.62 20.69 — — 20-34 — — 1.01 VS 10.25 — 35-49 — — — — 0.96 2.09 12.67 50+ — — — — JNehailh (b) Stomach cancer <10 0.18 0.40 13.84 — — — 10-19 — 0.57 0.47 5.05 —- — 20-34 — — eS 2.06 TEST 35-49 — — — = 12 — 0.08 6.15 50+ — = = = 8.82 (c) Breast cancer <10 — —0.02 — — —_ — 10-19 — 0.80 1.16 —a _ — 20-34 —- — = (OL ls) gal) 4.49 a= 35-49 a — — — 0.08 — 0.10 — 0.34 50+ — — — — 0.38 (d) Lung cancer <10 — —0.01 — 0.45 — — — 10-19 -— — 0.02 0.96 7.48 — — 20-34 a — = (0,23 Noe} 3.34 — 35-49 — — — 0.59 oll) 4.72 50+ 0.29 *Excess deaths per million persons per year per rad. Source: Kato & Schull.*! Although these factors have not been extensively studied in relation to the risk of radiogenic breast cancer, in at least two independent studies there are indications that nulliparous women and those with delayed parity have a higher risk of radiogenic cancer per unit of exposure than do other women.” That hormonal factors influence the risk of radiogenic mammary cancer in exper- imental animals has been shown in a num- ber of studies.°’ Time-Response The temporal distribution of radiogenic cancers is a matter of considerable prac- tical interest and possible significance for a deeper understanding of the mecha- nisms of radiation carcinogenesis. There is, first, a latent period following exposure before expression begins. This has been reasonably well determined for leukemia following low-LET irradiation, and for bone cancer induced by Ra-224, as two to four years.””? Following alpha irradia- tion from the administration of Thoro- trast, however, the minimal latent period for leukemia is longer, 5—8 years.*®“? For hepatic angiosarcoma following the ad- ministration of Thorotrast the minimal latent period, based on a compilation of several series, is about 16 years in com- parison with 9 years following initial exposure to vinyl chloride.“” The NIH Working Group modelled the latent pe- riod for solid tumors on the assumption that excess cancer begins 5 years after ex- posure and in terms of relative risk is fully expressed by 10 years after. RADIATION CARCINOGENESIS 111 The duration of expression is clearly much shorter for leukemia than for the solid tumors. Although it is difficult to specify the point in time at which the ex- cess reaches zero, observations on A- bomb survivors indicate that the duration of the leukemogenic response depends on age at exposure, with younger members of the study cohort showing no excess after about 20 years after the bombing, and older survivors showing a slight ex- cess even 30-35 years after exposure.” Since no large cohort has been followed to extinction there is some uncertainty about the length of the period of expres- sion for solid tumors other than bone. The latest report on the British ankylosing spondylitis series has a substantial expe- rience more than 35 years after treatment, 75 deaths having been observed for all causes vs. 66 expected at average national rates, but for all neoplasms combined there is no indication of an excess (14 ob- served vs. 17.4 expected). In the previous 5 years there were 68 observed vs. 57.6 expected, an_ insignificant excess.” Among the A-bomb survivors, on the other hand, survivors exposed to 100 or more rad (T-65D kerma) had 102 deaths from cancers other than leukemia vs. 63.8 expected in the 30-33 year interval after 1945, a highly significant excess.*! For the 34—37 year follow-up interval parallel fig- ures are not provided in the latest report, but it is clear that the excess continued to be a statistically significant one.* In the large international study of second can- cers among women treated for cervical cancer the radiogenic excess is stronger at 30+ years after treatment than ever before.” At present the investigation of time- response centers on the overall pattern of expression. The early experience of both the A-bomb survivors and the British an- kylosing spondylitis patients revealed that radiogenic leukemia is expressed in a wave pattern, with a peak 6-8 years after exposure of the A-bomb survivors and 2.5—5 years for the ankylosing spondylitis patients. The NIH Working Group mod- elled the combined experience of the two series for chronic granulocytic leukemia, acute leukemias of all types, and all leu- kemias combined except chronic lympho- cytic leukemia. Figure 5 exhibits its time- response model for acute leukemia by age at exposure. In an early paper on breast cancer among A-bomb survivors McGregor et al. showed that the radiogenic excess is dis- tributed over time in accordance with the age-specific pattern usual for this tumor in Japan.* This was followed by a paper by Land and Norman in which it was shown that radiogenic tumors of both breast and lung track natural incidence over time.* These developments led to the use of the “relative risk projection model” of the BEIR III Committee and its use of both an absolute and a relative risk model to predict the radiogenic ex- cess beyond the period of actual obser- vation, as in making lifetime estimates.’ In the 1950-1978 report on the mor- tality of A-bomb survivors Kato and Schull compared absolute vs. relative risk estimates over time within age-at-expo- sure groups (Table 4). This material has given considerable support to the hypoth- esis of a constant relative risk time-re- sponse function, 1.e., a multiplicative risk model. It is by no means established, however, that a relative risk model need employ a constant ratio of radiogenic risk to natural risk. In the 1950-1982 report on the mortality of A-bomb survivors it is observed that relative risks have de- clined over the interval 1959-1982, but not to a significant extent.* More impor- tant is the conclusion of the BEIR IV Committee that the data from the various series of underground miners fit best a relative risk model that declines with ad- vancing attained age, first at age 55 and again at age 65.*’ Other Risk Modifiers Epidemiologists have not wanted to overlook important interactions between 112 GILBERT W. BEEBE .15 ) .1125 = < .075 | 20 = .0375 SS z - LS O') er) 10 15 20 25 30 35 40 45 & Time Y in Years Following Exposure Fig. 5. Fitted Time to Tumor Model for Acute Leukemia Induced by Brief Exposure to Ionizing Radiation at Age A,. T(A,,Y) is the probability of diagnosis within one year after time T. Lines within the graph represent the indicated ages at exposure. Source: Rall et al.”° radiation and other risk factors for cancer but have mainly focused on smoking in relation to lung cancer, perhaps prompted by the example of asbestos and smoking and by the high prevalence of cigarette- smoking. Unfortunately the human data are not yet sufficiently robust to deter- mine the role of even smoking when com- bined with exposure to radiation. Studies of lung cancer among the A-bomb sur- vivors suggest that the risks may be addi- tive** but those on underground miners have been interpreted as supportive of a multiplicative interaction.*”” There may in time be a great deal more information about interactions between radiation therapy and chemotherapy for cancer from the follow-up studies de- signed to estimate the risk of second primary tumors, but at present such in- formation is very fragmentary and pro- vides little insight into the way in which chemotherapeutic agents and radiation therapy combine to enhance the risk of second tumors. Investigators at the Radiation Effects Research Foundation (formerly the Atomic Bomb Casualty Commission) RADIATION CARCINOGENESIS 113 Table 4.—Comparison of Absolute* and Relative+ Risk Estimates by Age at Exposure and Age at Death, All Cancer except Leukemia, A-bomb Survivors, 1950-1978. Age, in Type of 1945 Coefficient <30 30-39 0-9 Relative 1 Kya 5.0 Absolute 1.2 4.4 10-19 Relative 1.0 25 Absolute 1:7 20-34 Relative — 1.8 Absolute — 35-49 Relative oo — Absolute — a 50+ Relative — — Absolute — = *Excess deaths per million per year per rad. 7100+ rad vs. 0 rad. Source: Kato and Schull.*! have collected a great deal of information on variables of epidemiologic interest in addition to radiation and the obvious demographic characteristics, e.g., on diet and socioeconomic factors, but thus far no environmental or lifestyle factor has appeared to interact with radiation so as to yield a risk greater than the sum of the risks normally attributed to the two fac- tors acting independently. For example, Kato, in a recent review, reported that, although the risk of breast cancer in- creased with increasing socioeconomic status, there was no evidence of interac- tion.” The most significant data in the epi- demiology literature concern the relation between ultra-violet radiation (UVR) and ionizing radiation in inducing skin cancer. The New York University tinea capitis se- ries not only has an excess of skin cancer among Whites and not in Blacks, but its distribution over the scalp, face, and neck is clearly related to the intensity of ex- posure to UVR.’ The investigators be- lieve their findings suggest that UVR exposure levels, or sensitivity to such ex- posure, interact with ionizing radiation in causing skin cancer among Whites. Anal- ysis of the number of tumors per person suggested that there were subgroups of more and less susceptible individuals.’ Age at Death 40-49 50-59 60-69 70+ 6.8 = — — 13.4 — — — 2.4 8.2 — — 4.6 20.7 — — 2) 2.0 1.6 — 1.0 8.0 10.2 Iba | ES) 1.4 = Aled) 21 12.7 — 2.2 1.0 1.4 = == == 18.3 Experimental investigators have paid considerable attention to the combined effects of ionizing radiation and other agents, especially chemicals, and have identified agents that may reduce, as well as agents that may enhance, the carcin- Ogenic potential of ionizing radiation.*’ Summary An extensive experimental effort, cou- pled with growing epidemiological at- tention to radiation carcinogenesis, has created a large body of mainly descriptive information on the risk of cancer follow- ing exposure to ionizing radiation. A general outline of the relationship of ra- diation dose to the likelihood of cancer is well established, but empirical informa- tion is weak at the low-dose levels because the risks themselves are evidently so low; in general, estimates for the low-dose re- gion can be made only by fitting simple mathematical models to data covering a range of dose that reaches into its higher levels. In addition to dose other major factors influencing the magnitude of the risk of cancer include the target organ, age at exposure, and time after exposure. This 114 is an area of active investigation that ex- tends to host factors, elements of lifestyle, and environmental factors. The biologic basis for the highly variable sensitivity of various organs and tissues, apparently un- correlated with natural incidence, awaits explication through more fundamental biologic knowledge. There are several notable gaps and un- certainties in present knowledge: @ the magnitude of risk from low doses @ the effect of I-131 on the thyroid gland ® the RBE for fast neutrons @ whether fetal bone marrow is much more sensitive than that of infants and young children Major problems impeding the accu- mulation of knowledge on radiation car- cinogenesis include: ® limitations on the application of ex- perimental findings to man @ lack of any specific marker identi- fying the cancer of an individual as radiogenic ® paucity of human radiogenic cancers in even the largest series, in the light of the complex relationships requir- ing exploration @ practical difficulties of combining da- tasets from different studies Finally, there are powerful influences in the scientific community attempting to achieve consensus as the information on radiation carcinogenesis expands. 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Kagan, eds., GANN Mongr. on Cancer Re- search No. 32. Plenum Press. New York, pp. 53-74. Journal of the Washington Academy of Sciences, Volume 78, Number 2, Pages 117-121, June 1988 Genetic Effects of Nuclear Radiation Seymour Abrahamson Dept. of Zoology University of Wisconsin, Madison, WI 53706 When we consider genetic disorders, our concern lies specifically with the off- spring of the exposed parents and their descendants. Once a newly introduced ge- netic change enters the germline of either parent it is subject to various selective forces such that the germ cell itself may be killed, or be less able to produce prog- eny cells or complete the maturation di- visions required to transform it into a functional sperm or egg. Given that a suc- cessful fertilization has occurred the newly formed zygote is again subject to selective forces that may prevent success- ful gestation, usually the genetic imbal- ance leading to early abortion has caused such severe physical and or physiological abnormality that embryological or fetal development could not be sustained. Such disorders may well occur in at least 15% and probably closer to 35—40% of all con- ceptions normally. In other words nearly one out of every two conceptions are be- lieved to be spontaneously aborted, most of these in the early stages of pregnancy and many go unrecognized. The next stage at which selection occurs is in the new born, and as the major infectious dis- ease have been successfully eliminated we 117 learn that the residue of neonatal deaths, about 1% of all live births, die from pre- dominantly genetic or developmental ab- normalities. Recent studies carried out in Canada have shown that genetic disorders account for the major portion of pediatric hospital stays through the first five years of life. What is not generally realized by the public is that the current incidence of ge- netic disease in the live born population is estimated to be about 10% and is prob- ably likely to rise as modern diagnostic tools continue to elaborate the previously unsuspected genetic involvement in a va- riety of diseases. We have used the Na- tional Academy of Sciences report on the effects of low level radiation on popu- lations as one of the major reference sources. In addition The Nuclear Regu- latory Commission report Nureg/cr-4214 Health Effects Model for Nuclear Power Plant Accident Consequence Analysis and the Department of Energy report on Health and Environmental Consequences of the Chernobyl Nuclear Power Plant Accident, 1987 served as major sources of information for the estimates pre- sented. 118 S. ABRAHAMSON Table 1—Numbers of Naturally Occuring and Radiation-Induced Genetic Disorders In a Population of One Million, According to the BEIR III Report Analysis to the Present Analysis, Assumes a 0.01 GY dose. This Study BEIR III Report? (Central Estimates)° Type of Normal’ First All First All Disorder Incidence Generation Generations Generation Generations Single-gene 4800 3-30 20-100 Autosomal 15 70 Dominant X-Linked 4 20 Irregularly 43200 — 10-400 70 Inherited Chromosome 2880 <5) 5 Aberrations Aneuploidy 4 5 Unbalanced 6 8 Translocations TOTALS 50900 — — 30 175 “For a total population of 10° persons (16,000 live births per year) for 30 years (480,000 live births). ’ Cases expected in each generation of children from a population of 10° persons each receiving a dose of 0.01 Gy. Assume 30 year intergenerational interval and birthrate of 16,000 per year per 10° persons, or 480,000 children per generation. Broadly speaking we may classify ge- netic diseases into three bins; (Table 1) the first or monogenic disease, contains those resulting from the action of a de- fective gene as in the case of the dominant gene disorders, Huntington’s chorea is an example, and the sex-linked disorders for example muscular dystrophy; or when both members of a pair of genes are de- fective in the case of recessive disorders such as sickle cell anemia. About 1% of all liveborn will suffer from these forms of diseases. The second broad class of diseases in- volve changes in chromosome structure or number. In the former case the organi- zation of one or more chromosomes of the set (23 chromosomes from each par- ent) may be altered such that large seg- ments involving blocks of genes may be deleted, inverted, or reshuffled, so to speak, either within the same chromo- some or between two different chromo- somes (this is known as a translocation). All of these chromosomes derangements can lead to a wide range of genetic ab- normalities in liveborn and may constitute a substantial portion of the abortus class. Numerical changes are more commonly known to the public. Down syndrome ts the most famous example of this group, in which the child suffers both physical and mental deficiencies resulting from 47 instead of the normal 46 chromosomes. In this case chromosome number 21 is present three times. This particular dis- ease is among the most common genetic disorders in the human population, about one in seven hundred live births are Down’s children; and as is well known the frequency of the disease increases with the age of the mother, quite markedly after age 30. Some of the disorders as- sociated with trisomies of other chromo- somes are even more devastating to the health of the newborn and usually cause death within the first years of life. Many of the trisomies and the flip side, mono- GENETIC EFFECTS OF NUCLEAR RADIATION 119 somies, where a complete chromosome is missing, however, are so severe that they contribute perhaps the largest component to the abortus class. Collectively chro- mosome aberrations of the types just mentioned constitute about 0.6% of all live births, based on the cytological anal- yses of consecutive births in major re- search centers in the world, with well over 50,000 newborns screened. Finally the last category of genetic dis- order is collectively known as the multi- factorial class. As the name indicates these diseases result from a complex in- teraction of several to many different genes and environmental factors. This un- fortunately to date is the poorest under- stood class with respect to mechanism. And since this category is also the largest class making up about 90% of all the ge- netic ill health we presently document and some will suggest even more, we are hard pressed to make sound estimates of risk with respect to mutagenic agents. Perhaps the only bright spot in this vale of igno- rance is the likelihood that the induction of these events proceeds at a much lower rate and apparently will have less impact on offspring of the first several genera- tions after parental exposure than do sin- gle gene mutations and chromosome aberrations, possibly providing the sci- entific breathing room necessary to un- ravel the host of factors involved in each of these many disorders. It may not have been apparent from that which I have already said that not all genetic diseases become apparent at birth, in fact probably the majority begin to phase in after childhood and some only well after adulthood is reached. Though there is still more thorough work to be carried out I think it is fair to suggest that the impact of genetic disease is such that on average about 30 years of life expect- ancy is lost per genetic disease, this esti- mate also includes a component of disease severity and years so impaired. I recog- nize that years of life lost is a crude index of personal pain, family anguish and so- cietal cost; however, it does permit a means of collectively weighing the diverse health effects of cancer, teratology and genetics. In terms of health effects it pro- vides a better measure of the impact of the diseases than does simply a listing of cancer cases versus genetic disease cases or developmental abnormalities resulting from in utero injury. When dealing with newly induced cases of genetic disease it is customary to es- tablish a baseline population, for example one million people and a unit dose such as one rem (.01 Sievert) and describe the expected number of cases of each class. For example a population of one million persons composed of all age groups would be expected to produce about 480,000 off- spring in a thirty year period (one gen- eration). About ten per cent of these children would be expected to be genet- ically abnormal from natural causes and if this population had received an addi- tional one rem exposure from a radiation source such as a Chernoby] accident, then among these 480,000 children in addition to the approximately 48,000 naturally af- fected children there would be approxi- mately 20 children affected with dominant or sex-linked disorders such as hypercho- lesteremia, Huntington’s chorea, hemo- philia, muscular dystrophy the latter two are sex-linked and therefore would ap- pear only in the male offspring of exposed mothers. Some additional 10—12 children might be affected with chromosomal de- fects about one-half from numerical changes and the remaining from struc- tural unbalanced rearrangements. Thus about 30 cases would be expected in the first generation after an additional one rem exposure to one million people. Since the majority of the newly induced cases will persist for no more than five to six generations, calculations we have devel- oped for the Nureg report suggest that somewhat less than four times the cases 1.e. 120 additional cases will be distributed over those five generations. The frequencies of these diseases are derived from experimental studies pri- marily on mice and then extrapolated 120 S. ABRAHAMSON Table 2.—Collective Dose Projections External Exposure Population Ave. Individ. Distance Size Dose Equiv. (Gy) Pripyat 45 x 10° .033 3-15 km 24.2 x 10° 45 15-30 km 65.7 x 103 .053 Total 15 3< NC? x12. = 1.62 <0 2P-Gy W. USSR 75 > 1e Tee MOR E. USSR 400 x 10° 4.5, % 0s Asia 2,350 x 10° 3 Xr lOse Europe 450 x 10° 2 xs USA DON xO? Biotec WJ Total N. Hemisphere SHS) x 10? 4.92 xi 10a using theoretical models based on_ be possible to refine our estimates even experiments in a wide variety of animal, plant material and human cell cultures. In experimental test systems doses covering a wide range of exposures delivered at very low to very high dose rates have al- lowed us to demonstrate the shape of the dose response curve is a general phenom- enon applicable to all animal and plant forms studied to date. Clearly there must be uncertainty in ex- trapolating to humans in these situations, we however believe that the central es- timates as presented are probably accu- rate to within a factor of three, that is to say the true values are likely to be no more than three times smaller or larger than those we present. Of course as newer information becomes available it should further. It will be undoubtedly surprising for the lay public to learn that the Japa- nese A-bomb studies have to date pro- vided no evidence for an increased frequency of genetic disorders in the offpsring of the exposed survivors who compose the ongoing study group. I do not mean to say that nothing was induced but that the size of the studied group some 17,000 children in the exposed parents sample and 35,000 in the unexposed group and their respective received doses were such that no more than 50-60 ad- ditional cases of disorder was to be ex- pected and therefore they would remain undetectable relative to the natural oc- curring level. With respect to Chernobyl we have de- Table 3.—Estimated Increase in Genetic Disorders Approximately 1st Generation P-Gy x 10° 1986 Dose No. Region Commitment Induced Chernobyl 16 60 W. USSR 220 660 E. USSR 76 230 Asia 22 70 Europe 330 nt 1,000 USA 0.37 ~Il Total N. Hemisphere 640 1,900 vs. 180 x 10° Spont. Future Dose Commitment <1000 <3200 Natural incidence assumed to be 10.7% of live births. Expect = 1.7 x 10° live births in next 30 years. GENETIC EFFECTS OF NUCLEAR RADIATION 121 veloped global estimates on the impact of the radiation release from the Russian re- actor (Table 2) for the three major health end points of concern namely cancer ge- netics and teratological effects. As can be seen in the (Table 3) the estimated num- ber of induced genetic events will be lit- erally swamped by the naturally occurring ones such that it will be highly unlikely that they can ever be detected. The ex- ception to this statement may be a portion of the Chernobyl population which re- ceived an appreciable exposure of ap- proximately 45 rem before evacuation. This group of 22,400 people of the 135,000 in the region is the most likely cohort to be followed for epidemiological studies. With respect to other populations the distribution of cases will be largest in European Russia and Western Europe but as shown in the table the number of cases expected relative to the population size is so small that it should go unde- tected. Let me express this statement in another way. Given that a child is born over the next generation with any form of newly arising genetic disease described in the preceding discussion we can ask the question: How likely was the radiation from Chernobyl to have been a contrib- utory cause? The answer for all popula- tions outside of the Soviet Union is much much less than one percent. Spontaneous mutation or other events will contribute over 99% the likely causation. Since for Western Europe the exposure generally amounts to an additional 100 millirem (.1 rem) it is equivalent to postponing repro- duction by one year. For other parts of the western hemisphere the probability of causation from Chernobyl will be still smaller than for Europe. Summary We have presented the major genetic effects expected to be induced by high energy radiation exposure over the next five generations as well as the current nat- ural incidence of those diseases. The es- timated global distribution of doses were given with the expected number of genetic disorders resulting from the Chernobyl nuclear accident. These estimates suggest that it is extremely unlikely that the mi- nute increases anticipated will be recog- nized by any epidemiological studies because they will be overwhelmed by the natural incidence cases. The only excep- tion to this may be in the high dose subset of the Chernobyl population. We have also presented calculations regarding the probability of causation that radiation was responsible for any genetically diseased individual born subsequent to parental exposure. References Cited NAS/NRC. 1980. “The Effects on Populations of Exposure to Low Levels of Ionizing Radiation.” Report of the Committee on the Biological Ef- fects of Ionizing Radiations (BEIR) Nat. Acad. Sci, Nat. Acad. Press, Washington, DC. NRC. 1985. Health Effects Model for Nuclear Power Plant Accident Consequences Analysis. NUREG/CR 4214. U.S. NRC Contractor Report (SAND.85-7185). U.S. Gov't Print. Office, Washington, DC. 1987. Health and Environmental Consequences of the Chernobyl Nuclear Power Plant Accident. DOE/ER-0332. NTIS. US Dept. of Commerce, Virginia. Journal of the Washington Academy of Sciences, Volume 78, Number 2, Pages 122-124, June 1988 Round Table Discussion Biomedical Issues ELKIND: Mortimer Elkind, Colorado State University. I have a question for Dr. Beebe. I believe I understood correctly that the new dosimetry at Hiroshima/ Nagasaki showed a marked departure in incidence of leukemia as compared to the old dosimetry, in particular a peak ing at 300 rad, and for all other cancers a similar effect, but perhaps not as dra- matic. Do you have any comments about the change in the character of the curve, at least for leukemia with dose, which ap- pears to be coming out; secondly, if in fact the quality factor for neutrons were 20 instead of 10, would that have any bearing on the character of the curve and in what way it would it be changed? BEEBE: I think the full answer to that is, I don’t know. I wished I did, but I really don’t know. PETERSON: Harold Peterson, U.S. Nuclear Regulatory Commission. I no- ticed one of the things Dr. Abrahamson showed as typical is that genetic effects are depicted as per unit live birth. That, of course, raises the possibility that there is a component there that is lost and ob- viously cannot be measured, which is the transformations that are fatal in utero. Has the reproductive capacity or the fertility of the Japanese shown any in- dication, perhaps of. a drop, because I would suspect that was the only visible evi- dence, that the birth rate might drop a little. ABRAHAMSON: In a sense, I am 122 going to shift that over to Bob Miller in a moment, because Bob gave you some data that showed earlier on that there seemed to be a higher incidence in those who were exposed early in gestation for a drop in successful pregnancy. I know of no data from Hiroshima/Nagasaki that shows a signifcant increase in miscarriages or stillbirths, having been looked at for the multiple years. My memory, if it is correct, says that in a Neal and Shull publication back in the early 1950s, there was, at first, an in- dication of an increase in stillbirths, and that disappeared with time. Gil, you have much greater access to the Hiroshima data than I do. BEEBE: You remember that in the early days, there was a difference in the sex ratio, and that disappeared. But there were Six or seven or eight measures of genetic effects in the survivors of the atomic bombs. It began with simple ob- servations of the frequency of malfor- mations or stillbirths, neonatal deaths, body measurements, sex ratio, mortality after birth, and finally biochemical ge- netic studies. None of them show a de- monstrable genetic effect among that population. ABRAHAMSON: Another phase of the question I thought you were asking is, since I have only been concerned about genetic disorders among live born, you might ask me whether or not I would pre- dict there were induced abortis-type sit- uations occurring, and clearly yes, there ROUND TABLE DISCUSSION 123 can be quantitation for that as well. But since you do not know when they are dying within the first two, three, or four weeks of gestation, most of them would be in that first period, and they would go unrecognized to a great extent. MOSSMAN: Ken Mossman, George- town University. Dr. Beebe alluded to several studies, purportedly showing that at low doses of radiation, one can dem- onstrate cancer in the Israeli children and in Alice Stewart’s studies. I am addressing this to Dr. Puskin and the panel. In view of the concern about Radon exposure, are there similar studies which exist in which environmental levels of radon are also as- sociated primarily with lung cancer? BEEBE: As far as I know, our data line, the effect of radon in its quantitative adequacy is coming from the studies of underground miners, primarily uranium miners. Others may know of information I am not aware of, but I don’t know of any environmental radon studies. Arthur, do you? UPTON: Dr. Puskin, do you want to make a comment? PUSKIN: There are a few studies that have been done, but they are certainly not definitive. In Sweden, there is an Island which has fairly high radon levels in one part of the island and not the other. A comparison of the groups living in the high-radon area and low-radon areas did show an excess of lung cancer, which to the first approximation is what you would expect based on the uranium miner ex- perience. There has been a lot of concern about the high levels in the Reading prong area in Pennsylvania, and people have looked for an excess of lung cancers in that area. In fact, you do not see a high rate of lung cancers in those counties as compared to the country nationwide. Very recently, Dr. Archer has looked at this again, comparing the Reading prong counties with neighboring counties which had similar demographics and sim- ilar age structure. He found that there was an excess in the radon prong area. There are all kinds of potential confounders, but again to a first approximation, the excess is about what you would expect. This is still not shown definitively. The biggest study underway is the one being conducted under the auspices of the Department of Energy, with Dr. Steb- bings from Oregon as the principal in- vestigator. He is going to look at lung cancers in eastern Pennsylvania, outside of Philadelphia. They are going to do a case controlled study, comparing radon levels in houses of people who have lung cancer against the control group. They are going to go back to try to measure radon levels in people’s houses, going back in time, to try to get a lifetime exposure es- timate. EPA also has a study underway in the State of Maine to look at it. It’s another case controlled study. I think there is also one in New Jersey. There are some things going on, and so far the evidence is just not there yet. UPTON: Did you have a comment, Dr. Wald? WALD: Yes. I was going to comment that the estimate I heard is that it will be about five years before we have any de- finitive results from the studies that are ongoing. So we really are not in a position at this point to make any conclusions. MOSSMAN: I have another question for Dr. Abrahamson. I am not a geneti- cist, by any means, but I get a feeling from the genetics literature I have read that genetic effects, unlike carcinogenesis, are very wide-ranging. You can go from very subtle changes, which are by no means detrimental to the quality of life, all the way up to lethal changes. Is there research now underway to detect biochemical markers, so it would be easier for a ge- neticist to be able to identify genetic changes which would ultimately result in some alteration that phenotypically would be unrecognized but would allow you to make some type of risk estimate? ABRAHAMSON: As you know, most of the early mouse radiation studies, or even chemical studies for mutagenesis, 124 BIOMEDICAL ISSUES dealt with phenotypic markers—coat color, tail, hair shape, and things like that. Over the last 15 years, extensive work has gone into developing both enzyme markers and other biochemical end- points, and these are being used widely at major laboratories that are doing mam- malian studies. They are also being done in cell culture work as well. The National Institutes of Environmental Health Sciences have a big project on contract with other people at Research Triangle Park, developing these biochemical markers. Oak Ridge is dealing with them. The large mouse research laboratory in Germany is also extending the number of locii that can be studied with biochem- ical markers. I think we are up to about 75 now. WALD: Can I add, your question re- lates to the previous one that you asked, in that biochemical markers are also being used in epidemiologic studies for the early detection of precancerous changes. In fact, Dr. Luke Culler at the University of Pittsburgh is looking at bronchial cells’ DNA content in high and low radon homes. PUSHKIN: It may be noteworthy in this connetion to comment that at the ra- diation effects research foundation in Ja- pan, efforts have been made to exploit biochemical markers to amplify what has not been found using phenotypic changes. As has been brought out, there really has been no definitive evidence for the trans- mission of inheritable damage to the chil- dren of A-bomb survivors. The biochemical genetic studies uti- lized blood proteins as measures of mu- tational change, and as many as a million gene products have been examined with- out detection of a significant excess of phenotype variance among the children of irradiated survivors. The effort is now going into the use of recombinant DNA methodology to look for changes at the level of the genome itself, but I think this is an area that is developing. There has been evidence for mutational change in the bone marrow cells of sur- vivors, using another set of protein end- points, glycoforin proteins, and the excess incidence of glycoforin mutants as a func- tion of those seems to correlate very well with the excess of cytogenetic abnormal- ities. WALD: Could I just add one thing? I think that many of the studies that just use simple, “Is the enzyme altered in its effectiveness by electrophoretic type studies?” with radiation may be doomed to failure. You need to have plus-minus markers. Is the enzyme product there, or is it not there. My bias is that most of the x-ray induced genetic events we call gene mutational and probably deletional, and therefore, if you delete a gene or a major part of it, you are not going to see a subtle change in electrophoretic markers. You are going to see the loss of the protein. That may be part of the reason we haven’t been able to detect it in the past. Journal of the Washington Academy of Sciences, Volume 78, Number 2, Pages 125-130, June 1988 How Safe Are Nuclear Plants? How Safe Should They Be? Herbert Kouts Department of Nuclear Energy Brookhaven National Laboratory Upton, Long Island, New York 11973 We are becoming so accustomed to thinking about safety of nuclear plants in terms of risk as defined by the WASH- 1400 study that some of the implications for the non-specialist escape out atten- tion. Even putting the question in these terms upsets many people. Many do not like to be reminded of their mortality, and they become frightened when it is sug- gested that some one thing can be singled out as possibly having a chance of ending their lives. This is especially true if that something is unfamiliar to them. It gets worse when we start to discuss nuclear plant safety in probabilistic terms. Probabilities are not widely appreciated. Perceptions of probability are clouded by widespread belief in good luck and bad luck as an attribute of people or circum- stances. It is usually not helpful to people who believe that big shifts in luck are com- monplace to be told that some event has only a very low probability. Yet we know that a rational program to understand safety, to identify unsafe events, and to use this kind of information or analysis to improve safety, requires us to use the methods of quantitative risk 125 assessment. How can we make this pro- cess more understandable to a broader group of nontechnical people? And how can we develop a wider acceptance of the results of the process? These are questions that have been struggled with for some time in the world of nuclear plant safety. The Nuclear Reg- ulatory Commission examined them for several years as it moved toward devel- oping a position on safety goals for nu- clear plants, a requirement that had been assigned it by Congress. Opinion was sought from a broad spectrum of individ- uals, within the field of nuclear power and outside it, on the topic that was popularly called, ““How safe is safe enough?” Views were solicited on the answer to the ques- tion and also on the way the answer should be framed when it was adopted. A first workshop led to a coalescence of opinion that quantitative safety goals should be developed. Simplistically, these could be in the form that a nuclear plant should be so safe that the risk from ac- cidents should not exceed x early fatalities and y late fatalities each year. Following these conclusions, it was pointed out that this would be interpreted by the public at wn 126 HERBERT KOUTS large and even by political circles such as Congress that the Nuclear Regulatory Commission thought it would be all right if a nuclear plant killed x people outright and caused y fatal cancers each year. That spelled the end of strictly quantitative safety goals for nuclear power plants. A second workshop was held. The con- clusions changed. There was now a rea- sonably broad consensus that safety goals had to be qualitative; that they had to ensure safety of nuclear plants in the con- text of nothing being absolutely safe in this world, but nuclear plants being better than the rest. After some deliberation, the Nuclear Regulatory Commission adopted this course last year. It adopted two qualita- tive goals. The first was that nuclear plants should not entail any significant ad- ditional risk to life and health. This goal limits the risk from nuclear plants relative to the risks from ordinary living. The second safety goals states that the risk from a nuclear plant should be comparable to or less than the risks from viable competing technologies for generating electricity, and should not be a significant addition to other societal risk. The goals when stated in these forms should be understandable to nontechnical people, though they do include a potential problem in that they use the word “‘risk”’ in its WASH-1400 technical meaning while seeming to substitute it for a word like “danger” for purposes of public inter- pretation. Though the intention to state under- standable goals was probably accom- plished by this adoption, the goals were not very useful in this form for the reg- ulatory staff. They were not a clear yard- stick that could be used in determining when they were met or were not met. So the Commission also settled on what were called quantitative objectives, that re- stored some of the features of the quan- titative goals that had been discussed in the workshops. One of these referred to the early ef- fects of potential accidents on people liv- ing near nuclear plants. It said that the risk to an individual living in the vicinity of a nuclear plant of being killed as the result of a reactor accident should not ex- ceed one-tenth of one percent of the sum of prompt fatality risks resulting from other accidents to which members of the U.S. population are normally exposed. The second said that the risk to the pop- ulation near a nuclear plant of dying from cancer caused by a nuclear accident should not exceed one-tenth of one per- cent of the sum of cancer fatality risks resulting from all other causes. These quantitative objectives were aug- mented by what was called a “‘general per- formance guideline” to the effect that the chance of a reactor accident leading to a large release should be less than one in one million per year of reactor operation. In adopting these goals, objectives, and the guideline, the NRC quietly over- turned a position it had taken several years earlier when it attacked the concept of risk assessment generally and WASH- 1400 in particular, and said that these methods should not be used in regulatory applications. This new policy on safety goals could not be implemented other than through use of risk assessment meth- ods. In fact, the safety goals policy simply gave formal recognition to the reality that risk assessment by the best available means has turned out to be a powerful and even a necessary tool for ensuring and improving the safety of nuclear plants. It has put important new meaing into such time-honored phrases in nuclear safety as, “without undue risk to the health and safety of the public.” Let’s now examine the implications of these positions taken by the Nuclear Reg- ulatory Commission. The Center for Dis- ease Control of the U.S. Public Health Service issues statistics on the causes of death in the United States. In the Decem- ber 19, 1986 issue of the Morbidity and Mortality Weekly Report can be found sta- tistics for the year 1984. Injuries or ac- cidents accounted for 4.6% of all deaths. HOW SAFE ARE NUCLEAR PLANTS 127 According to the first quantitative safety objective, nuclear plant safety would therefore require that nuclear plants meet the criterion that nuclear plant accidents will not lead to a probability of accidental death greater than 4.6 x 10~° for individ- uals at risk. The same publication states the relative mortality rate from malignant neoplasms as 22.1%. The second quantitative safety objective therefore implies that for the population living near nuclear plants, these plants should not contribute more than a probability of 2.2 x 10~* of inci- dence of fatal cancer over lifetime. These are cold-sounding statistics, of the kind that have a tendency to disturb most people. They give an impression that nuclear power safety advocates first de- termine that there is a hazard attached to a nuclear plant, and then they say—go right ahead with it after all. There are plenty of unprincipled politicians ready to take advantage of this kind of public gut reaction, and the country is plentifully supplied with other individuals who are eager to take advantage of public fears to further their private objectives. But I do not see how we could avoid use of such statistical methods if we are to improve safety of nuclear power plants, any more than we could avoid use of similar statistical methods to determine where to find the most urgent areas for research against mortality from disease, or to locate the region of the country most in need of improved measures for com- mercial air safety. Other safety goals and safety criteria than the ones adopted by the NRC have sometimes been proposed, and some are incorporated in more or less obscure forms in some standards and regulations. One of the oldest is that nuclear power plants should not directly contribute to a time-averaged increase in radiation level by more than some factor times the nat- ural rate. This has been the basis for some ICRP and NCRP standards and recom- mendations regarding radiation levels from normal operation of nuclear facili- ties. Another concept has been proposed to the effect that nuclear plant activities should contribute a time-averaged radia- tion level not exceeding the variability in radiation dose absorbed in connection with variability of choice by individuals. This is apparently the basis for the EPA regulation 40CFR190. The former of the two criteria would lead to an annual average radiation level to an individual from all causes attached to operation of nuclear plants of no more than about 140 mR/year. A direct com- parison between this and the NRC’s safety objectives is not possible. For one thing, interpretation and use of the NRC objectives requires use of a dose response curve with inherent difficulties as to wide- spread acceptance and as to how to add long-term and one-time doses. For an- other, the annual dose limit of 140 mR/ year would have to be added up over a lifetime to determine statistics. Naive use of the BEIR-3 value of LET dose per can- cer at low dose, low dose rate implies that the 140 mR/yr value exactly coincides with the NRC delayed fatality safety goal for an individual exposed at this level for ten years of his life. The latter criterion based on the effect of variability in choice would be comparable to the NRC delayed fatality objective for an individual who spent his full lifetime at the 140 mR/yr annual radiation level. I summarize all of this by noting that all of the objectives and criteria that have been discussed are in aproximate agree- ment. They are in much better agreement numerically than the uncertainties in the numbers themselves. Risk assessment is still an inaccurate science. There are other interesting aspects to the question of how safe nuclear plants should be. Analysis of the source term of fission product release from postulated severe accidents to nuclear power plants of the type used in the United States now makes it clear that the off-site conse- quences of a severe accident would de- pend very strongly on the length of time the containment remained intact, holding 128 HERBERT KOUTS in any fission products released from the reactor’s primary system into the contain- ment. If an accident were to lead to melt- ing of the core of a reactor, if the fission products escaped from the primary sys- tem into the containment, and if the con- tainment remained intact for a few hours longer, say more than three or four hours, the effects of plateout and of agglomer- ation and settling of aerosol particles would dramatically lower the amount of fission products available for release to the environment. It is found that almost all the contribution to risk is the result of severe accidents that could lead to early containment failure. Mechanisms for this have been identified, and recent NRC- sponsored research has addressed the probability of early containment failure and the effect on consequences of severe accidents. It is found that the NRC safety goals and the numerical safety objectives are met if the probability of a severe accident with early containment failure is less than approximately 10~° for an average nu- clear plant. This finding has considerable uncertainty associated with it, much being the result of variation in meteorology, population distribution, design of the plant, and general difficulty in accurate analysis of risk. This raises an important problem which will be solved only very slowly in the fu- ture. I referred a few moments ago to risk assessment as an inexact science. This leads to lack of ability to be absolutely sure if the goals and objectives are met. We are using a yardstick whose length is somewhere between one foot and ten feet: This means that for the time being, at any rate, the ability to meet the Nuclear Regulatory Commission’s safety goals can be only one index to the safety of nuclear power plants. It is widely accepted that these methods cannot be used to settle absolutely the question of adequate safety of a particular nuclear power plant. Prob- abilistic analysis has to be added to other methods to reach an overall conclusion based on many perspectives. Other kinds of questions that need addressing are: How well is the plant managed? What is its operating record? What is the char- acter of the operating staff—how expe- rienced are they? How well-trained? How well do they know their plant? How well do design and operation of the plant avoid potential problem areas that have come to be recognized over the years? From answers to all of these questions can be developed a profile that can be used to identify weaknesses that might undermine the safety of a specific plant. The safety goal structure of the Nuclear Regulatory Commission is more usable to assess the safety of the nuclear power in- dustry, where the inputs from many risk assessment analyses should lead to some improvement of the statistical results and where an accumulation of historical in- formation begins to be useful. This leads us into the second of the two questions I want to explore. This is, how safe are nuclear plants? I want to consider this point from the standpoint of how well nuclear plants have measured up histor- ically to the NRC’s safety goals. This aspect of the question is especially important in view of the emphasis on Chernobyl in the title of this symposium. But before we consider the implications and impacts of Chernobyl, let’s concen- trate on the United States, where nuclear plants very different from Chernobyl’s RBMK design are used. The United Staes has specialized in nu- clear power plants with water-moderated and water-cooled reactors. All but two U.S. nuclear plants are of this general class; one of the exceptions is a small, demonstration size plant in Colorado us- ing a gas-cooled reactor, and the other is a government-owned plant at Richland, Washington which produces plutonium for nuclear weapons and also supplies steam to turbine-generators operated by the Washington Public Power System. As is well-known, the one substantial nuclear plant accident in the United States occurred in 1979 at the Three Mile HOW SAFE ARE NUCLEAR PLANTS 129 Island Unit 2 nuclear plant in Pennsyl- vania. This accident destroyed the reactor and led to permanent shutdown of Unit Number 2. Though hydrogen was gen- erated as a result of extensive oxidation of the zirconium-based nuclear fuel clad- ding during the accident, and the hydro- gen was released into the containment building where it burned, the integrity of the containment structure was preserved, and it was apparently not threatened. The only radioactive material released from the plant because of the accident con- sisted of the noble gas inventory and about 18 Ci of active iodine. Radiation levels outside the plant were far below life-threatening values and the total pop- ulation dose was about 5000 man-REM. According to the BEIR-3 model this is assumed to be productive of a probable 0.8 cancers over the period of 30-50 years following the accident. About 1000 reactor years of U.S. com- mercial water reactor experience have now been accumulated. A similar number of reactor years has been accumulated in other countries with nuclear plants of the same type. This is not enough for an ad- equate statistical basis for a test of meet- ing of the safety goals and objectives, but it is close. So far there have been no early fatalities in the U.S. or elsewhere as a result of accidents to water reactors, and an upper limit to the rate at which light water nuclear plants may have induced cancer is about 4x10~* per operating year (we use the full 2000 reactor years of experience in deriving this number). There are now almost 400 light water nu- clear plants in the world, so another 1000 reactor years of experience will be accu- mulated every 2-1/2 to 3 years. Thus ac- curate historical tests of the safety goals and objectives are almost at hand. Let me recall that the second NRC safety goal compares electrical generation by nuclear plants against viable compet- ing technologies. The principal compe- tition is coal. To make a comparison between the two, I draw on some analyses made four years ago by Hamilton and co- workers. The comparison is made for the full fuel cycle, including not only electrical generation but also mining and transpor- tation. It is seen that in all categories the risk from the nuclear option is lower than that for coal. The comparison is, however, not as reliable as one would like it to be. The range of the estimate of mortality from air pollution reflects the great uncertainty in use of a linear hypothesis for the effects of pollution at low doses. If anything, the use of this sort of hypothesis for organic pollutants and other components of smoke from a coal plant is more ques- tionable than it is for effects of nuclear radiation. To summarize, the safety goals and ob- jectives estalished by the Nuclear Regu- latory Commission seem to be met for nuclear plants in this country, for the in- dustry as a whole. The statistical evidence supporting this conclusion is not yet ad- equate in some respects, but the statistical situation is improving rapidly. These conclusions also seem to apply to other countries using water cooled and moderated nuclear plants of the western type. What is the effect of Chernobyl on all of this? In the averaging process that tells the historical story of safety of nu- clear plants, there is some temptation to add to the effects of TMI those from Chernobyl. I have thought about this possibility, and believe that for any in- ternational objectives that consider the effect of nuclear power world-wide, and that contemplate improvement of nuclear safety world-wide, there is some merit to this. But in doing so one should realize that any averages formed this way are taken over two very disparate distribu- tions. The RBMK’s in the Soviet Union are so different in their design and their safety features, and their mode of oper- ation has been so singular, that averaging over the two sets loses a great deal of meaning. Certainly to form such an av- erage would not improve our understand- ing of how safe U.S. types of nuclear 130 HERBERT KOUTS plants are, when operated by U.S. prac- tices. The Soviet government gives all signs of believing that the past characteristics of RBMK’s and their mode of operation at Chernobyl are not acceptable accord- ing to safety objectives of the Soviet Union. A number of physical changes are being made to RBMK reactors. New op- erational practices have been substituted for old discredited ones. Management personnel from Chernobyl have been sub- jected to criminal trials, found guilty, and are undergoing punishment. I believe that it would be wrong under the circumstan- ces to use the historical record of RBMK’s including the Chernobyl! accident in eval- uating the safety of these plants under present circumstances, and it would be even more wrong to apply such results to U.S. nuclear plants. At the end of an analysis such as that preceding, I am left still unsatisfied as to the way the conclusions would be received by a broad public. The case for nuclear plant safety will probably have to become so clear that the analyst is obviously in- nocent of any charge of using numbers to obscure reality. Nuclear plants will have to show in real life a level of safety that reassures the public through pervasive excellence. I believe that it is not the function of the Nuclear Regulatory Com- mission to achieve this. They have de- veloped a set of safety goals that I believe are rational and laudable, and which are suited to the responsibility of a regulatory body of this type. There should be no tightening of the screws by the NRC sim- ply to reassure the public. Achieving a level of excellence beyond that required by the regulators should be the responsibility of the nuclear in- dustry. They are the only group able to do this, and they should do so as an act of social responsibility. If they are to have any sponsors and helpers in the Federal establishment in their enter- prise, it should probably be the Depart- ment of Energy, which still has such a responsibility according to the Atomic Energy Act. Journal of the Washington Academy of Sciences, Volume 78, Number 2, Pages 131-138, June 1988 Chernobyl—Lessons Learned William Kerr Professor of Nuclear Engineering The University of Michigan Ann Arbor, MI 48109 ABSTRACT Although the significant differences in design and in operating philosophy of the No. 4 reactor at the Chernobyl Nuclear Plant preclude the possibility of an identical accident at an operating US reactor there are lessons, applicable to US reactors, to be learned. The Soviet reactor had identifiable design weaknesses. Some US reactors have design features which, if improved, could eliminate or make less serious hypothesized accidents. The Soviets appeared to have become complacent because of a good operating record. There is evidence that some US reactor owners should be more aware of the potential for and methods for avoiding low probability severe accidents. It appears that Soviet operators found it easy to defeat a number of safety systems in the course of performing an unusual operation. We must continue to emphasize the importance of careful exami- nation of possible consequences of abnormal operating modees. The Soviets had emer- gency plans which could not be followed in the actual accident. There is evidence that some of our own emergency planning needs reexamination in light of experience gained in emergency drills. Finally, since it is to be expected that severe accidents will occur infrequently, it is imperative that we continue to study this accident carefully in an effort to make serious accidents in operating US nuclear power plants less likely. Prologue Apprehension about the use of nuclear energy to generate electricity has a pos- sible parallel in the fear associated with the application of steam power to trans- portation in the eighteenth century. Ex- plosion of boilers on boats used in river transportation became frequent enough that several cities, including Cincinnatti, where one explosion took 150 lives, set up special committees to investigate the hazards of steam boilers, and to ask for legislation restricting their use. In 1832 a Select Committee of the twenty second 131 Congress of the United States was con- vened to investigate the dangers. The opening passages of the committee’s re- port bear a striking resemblance to some of the public concerns expressed today about nuclear power. “The distressing calamities which have resulted from the explosion and collap- sion of the boilers of steam boats, the increasing dangers to which the lives and property of so many of our fellow citizens are daily and hourly exposed from this cause, unite in their demands upon that Government, possessing the competent power and authority, to 132 WILLIAM KERR throw around the lives and fortunes of those thus exposed, all the safeguards which a wise and prudent legislation can give.”’ The Select Committee gathered a wide variety of testimony by distributing ques- tionnaires and by advertising for infor- mation in newspapers. After considering the collected testimony, the committee reported ‘“‘A Bill to provide for the better security of the lives of Passengers on board of vessels propelled in whole or in part by steam.” The bill required periodic inspection of steamship boilers to ascer- tain that the boilers could withstand three times the pressure to be expected in nor- mal operation. Passed in 1838, it did not prevent the further occurrence of boiler explosions. However it did set a prece- dent for government regulation of ship- ping in the interests of public safety.’ Today, the application of nuclear power is more closely regulated than any other energy source, and the excellent safety record is, to some extent, a reflec- tion of this regulation. But, in spite of both public and private efforts to ensure safety, we cannot guarantee that serious accidents will not occur. In the US we have been able to accumulate a significant amount of operating experience with no accidents that have caused physical dam- age to the public. On the other hand, studies indicate that improvements in both design and in operation which should be achievable with an expenditure of modest resources, can decrease further the likelihood that serious accidents will occur. The accident at the Chernobyl] nuclear power plant has heightened public con- cern over reactors operating in this coun- try. However after extensive studies by the nuclear industry, by the Nuclear Reg- ulatory Commission, and by the Depart- ment of Energy, it has generally been concluded that, because of the differences in the design and of the operating char- acteristics of the RBMK 1000, and of the reactor power plants in operation in the United States, an accident of the kind that occurred at the Chernobyl plant cannot happen here. Nevertheless there are les- sons to be learned from this accident, and since it is unlikely that many serious ac- cidents will occur, it is important that we study this one carefully in order to make subsequent ones even less likely. Introduction Almost 18 months ago, the Soviet Union experienced, in one unit of a large nuclear power station, north of Kiev, the most serious power reactor accident that has yet occurred. Before the accident, de- tails of the design of the RBMK 1000 re- actor, and information on its operating experience, were not readily available in the West. Since the accident, the Soviets have been very open in making infor- mation available in both areas. Because of the wide dissemination of information on the causes and of the course of the accident, no effort will be made to du- plicate that information in this paper.*°“ However there are certain key elements of the accident from which useful infor- mation can be adduced. Brief Comments on and Key Points in the Accident Sequence In retrospect a number of factors ap- pear to have contributed to the occur- rence of and to the serious damage produced by the accident. Some of those considered most important are listed and discussed below: a) Design Weaknesses—lIt is generally agreed that a major contributor to the onset of the accident, and to the se- riousness of its consequences, was the existence of a positive coolant void coefficient of reactivity. It appears that the designers of the RBMK-1000 were fully aware of the positive void coefficient, and of its potential con- CHERNOBYL—LESSONS LEARNED 133 tribution to reactor instabilities. How- ever because of economics (a lower fuel enrichment results in a larger pos- itive void coefficient; greater enrich- ment increases fuel cost), because the technology for producing large pres- sure vessels was not available in the Soviet Union when the design was made some 25 years ago (the use of the pressure tube design requires a large amount of graphite in the core, and produces an over moderated sys- tem), and because they already had experience with this design (although this was not made explicit, this expe- rience was probably gained with re- actors whose principal purpose was plutonium production) they decided to use it for all of their early power producing reactors. The designers concluded that careful attention to op- erating procedures could ensure that the reactors operated safely. Further, the design of the reactor control system reflects a different balancing of on- line availability and safety than is char- acteristic of US designs. Because of the importance of maintaining a reliable source of electric power, great emphasis is placed on high availability. In US re- actors, rather small deviations from nor- mal operating conditions produce rapid and complete shutdown (scram) of the re- actor. The same set of conditions in this reactor would normally lead to a gradual control rod insertion, lowering power, in the expectation that whatever caused the transient could be corrected without tak- ing the reactor off line. Automatic scrams for these reactors are extremely rare, and the reactivity control system is not de- signed for automatic rapid insertion of negative reactivity. Thus when operating conditions arose that produced a large, rapid insertion of positive reactivity, there was no mechanism for automatic insertion of negative reactivity to prevent the huge power surge that resulted. b) “If It Ain’t Broke, Don’t Fix It’ Syn- drome—Significant successful opera- tion of these reactors over an extended period had given those responsible for their operation an undeserved sense of security. The Soviet spokesman in Vi- enna commented that this power sta- tion had an unusually good operating record. Because of this the operating organization may have grown compla- cent. The Soviet team stated that after the TMI 2 accident they conducted a thorough review of the designs and op- erating procedures of their power re- actors. For whatever reason, they missed some important accident pre- cursors. One can hope that this acci- dent has convinced them that a continuing careful search for other possible precursors of severe accidents is necessary if we are to avoid addi- tional accidents. There is evidence that before TMI 2 some US organizations had concluded that since no serious accidents had happened none could happen. Indeed there is evi- dence that a few organizations still retain this misapprehension. It is to be hoped that a third serious accident will not be required to bring them face to face with reality. c) Planning for the Unusual—lIt is signif- icant that this accident occurred in the course of an experiment, performed on a midnight shift, on a weekend, and after some twelve hours of delay (dur- ing which time a shift change oc- curred) in the planned schedule, caused by a load dispatcher’s request for continuing power production dur- ing the daytime hours. To complicate things further, this experiment had been tried once before, with unsatis- factory results, and there was pressure to complete it during this planned out- age. If this try was unsuccessful, the next opportunity was not to occur for more than a year. One cannot identify any one of these fac- tors as the major contributor to the ac- cident. Nevertheless it is clear that each 134 WILLIAM KERR contributed to an unusual situation for the operating staff, and thus each deserved special care both in the planning and in the performance of a set of unusual op- erations. Available evidence indicates that a number of these contributors was not given adequate consideration in the planning and in the performance of the experiment. d) Adequate Safety Analysis of Unusual Operations—US regulations require a detailed safety analysis, reviewed and approved by the NRC, before an ex- periment of the kind performed at Chernobyl, is undertaken. The Soviets reported that the station manager was responsible for the performance of such an analysis, and that one was performed. No additional detail was given, but it was implied that the anal- ysis was inadequate, perhaps perfunc- tory. Remembering that this was the second time for this experiment, and that the first time the experiment was run the reactor was shut down when the turbine was tripped, it is plausible to suppose that, having performed a safety analysis for the first experiment, little attention was given to the addi- tional risk associated with keeping the reactor operating after turbine trip had occurred. Indeed it is possible that, since the planned standby power was about 1000 Mwth, little or no con- sideration was given to the possibility of having the power go as low as it did (recall that it dropped as low as 30 Mwth, and was eventually stabi- lized at about 200 Mwth before the turbine was tripped). In any event the evidence available suggests that an inadequate safety analysis was performed. It is worth noting that current practice of the Nuclear Regulatory Commission calls for a stepped ascent to full power oper- ation for new plants coming on line, the philosophy apparently being that there is less risk in operating at low power than at full power. However there does not appear to have been any careful study of this question by either the NRC staff or by licensees. It would appear, in the light of the Chernobyl experience, that this question deserves some attention. Al- though the RBMK reactors have signifi- cantly different operating characteristics than US water reactors, the US reactors are designed and are analyzed primarily for full power operation. If they are to be operated for extended periods at low power, it would appear prudent to make a careful search for any unanticipated risk that might be produced thereby. e) Those Responsible for Plant Operation Were Not Aware of the Plant’s Off- Normal Characteristics—Even though the plant designers were aware of the instabilities that could occur at low power, those responsible for plant op- eration almost certainly were not. They surely did not understand the likelihood of a large rapid insertion of positive reactivity given the operating conditions that existed at the begin- ning of the experiment. Nor could they have been aware of the possible con- sequences. They also must have been unaware that with the control rod ar- rangement that existed at that time, not only was it impossible to achieve a rapid insertion of negative reactivity, but to make matters worse, the initial control rod insertion actually intro- duced positive reactivity! US experi- ence, however, suggests that lack of communication between those who design reactor systems and those re- sponsible for their operation is not unique to the Soviet system. f) It Was Surprisingly Easy for the Plant Operators to Defeat a Variety of Safety Systems and Operating Restrictions— It appears that the planned experi- ment called for some of the normally operable safety systems to be made inoperable, and we assume, from the Soviet report, that there had been an analysis of the risk associated with this g) CHERNOBYL—LESSONS LEARNED configuration. However, for unex- plained reasons, during the entire 11 hours from the time when the exper- iment had been scheduled, to the time at which it actually began, the ECCS was disabled. Further, although some of the unusual safety system configu- rations may have been analyzed, the final configuration of control rods that existed at the time of experiment ini- tiation almost certainly had not been, since it was arrived at during the course of attempting to reach a stable power level for the reactor during re- duction from the 50 percent power at which it had been operating since early the previous afternoon to the planned level for the experiment. The Soviet spokesman commented that the nor- mal complement of inserted rods was 30. That with specific approval of the station manager, this could be re- duced, but to no less than 15. At that point, he said, “not even the prime minister could authorize any further reduction”. (The number still in-core when the experiment began was re- ported to be as low as six!) During the Vienna meeting the Soviet spokesmen gave the impression that they could not understand how a decision could have been reached to go to that con- figuration. The implication was that the decision was made by the opera- tors. Since then there are indications that the local plant manager is being blamed more than one might have expected from the reports made in Vienna.° A question was raised during the Vienna meeting about the ad- visability of automatic ‘‘stops” that would have prevented withdrawal of control rods beyond a certain point. The answer of the Soviets was that when this reactor system was designed it was concluded that humans were more reliable than the hardware avail- able at that time! Emergency Plans Existed, but the Plans Had to be Revised Once the Accident Had Occurred—Although h) 135 emergency plans for accidents at the Chernobyl plant existed, they had to be revised once the accident occurred. For example, initial measurements in Pripyat indicated that evacuation would likely not be required. A day later, when the release mechanism had changed, and atmospheric con- ditions were different, measurements convinced those responsible that evac- uation was required. However at this point, because local deposition of fission products had occurred, the original evacuation plans had to be modified significantly. The evacua- tion, when it did occur, apparently proceeded with dispatch. Further, the treatment of those injured during the accident, and the monitoring of those in the zone near the reactor, appears to have been carried on with remark- able efficiency. Several of those who listened to the description of how evacuation and treatment were con- ducted concluded that the Soviets must have had previous experience with some similar accident. (Indeed Dr. Sakharov is reported as having stated at a meeting in Moscow in Feb- ruary of 1987, that several hundred of those involved in an accident in the Urals about 1970 experienced ex- treme radiation sickness.°) The Soviets Claim to Have Learned from TMI 2—The Soviet team re- ported that after TMI 2 they reviewed their own reactor power plants and their operational program extensively and applied the lessons learned. Ob- viously they overlooked some impor- tant contributors to the TMI 2 accident that were clearly identified by several reviewers of that accident. Of special relevance to the Chernobyl accident were the recommendations of several of the various TMI 2 review groups that operational personnel be better trained to deal with the characteristics of the reactor systems in off-normal situations, and that more attention be given to risk produced by operating 136 WILLIAM KERR personnel in contrast to the emphasis that had been placed, up to that time, on risk produced by equipment mal- functions. What Can We Learn From The Chernobyl Accident? The philosopher Santayana is reported to have said that those who do not learn from history are doomed to repeat its mis- takes. What can we learn from Cherno- byl? a) We Cannot Have a Chernobyl Type Accident—Many US commentators have assured us that a Chernobyl type accident cannot happen in US reactors because of the significant differences between the RBMK-1000 and US light water reactors. This is true. Neverthe- less it is possible that US power re- actors may be subject to some as yet not thoroughly evaluated abnormal situations that could cause serious dif- ficulties. We should continue to look for them. For example although the issue of Antic- ipated Transients Without Scram has been studied at length, and is now con- sidered a resolved safety issue by the NRC, we nevertheless still depend heav- ily on a remarkably high estimated scram system reliability in our calculations of risk attributable to this transient. For ex- isting reactors this situation may be tol- erable because of the difficulty of making significant changes in reactors systems al- ready in operation, but for reactors not yet constructed there are changes in de- sign for both PWRs and BWRs that could, with modest cost, make this tran- sient a much smaller source of risk, even if the scram system failed completely. Should we continue to use the same de- signs for future reactors just because our experience to date has been acceptable? The consequences of an unmitigated ATWS in some power plant systems could be very severe.° b) We Should Not Accept the Limited Positive Experience That We Have Had With Operating Plants as Ade- quate Assurance That no Further Se- rious Accidents Can Occur.—Such accidents are not expected to occur very frequently. Furthermore experi- ence on the part of those who have examined plant systems in detail (us- ing, in most cases, Probabilistic Risk Assessment) has indicated that such a plant-wide examination, done system- atically, frequently reveals weaknesses that are obvious enough when discov- ered that they are corrected without any formal action on the part of reg- ulators. All nuclear power plant op- erators should perform at least a Class 1 PRA using, for the most part, their own staff. A similar thorough evalu- ation of containment system perform- ance in severe accident situations should be performed. The results will be useful not primarily as a numerical indication of expected risk, but be- cause of a better understanding of in- tegrated system performance to be expected in both normal and abnormal situations. This understanding is most useful if it becomes part of the back- ground of the permanent operating staff. c) Someone, Very Near the Operations Level, Should Have a Thorough Knowledge of the Off-Normal Behav- ior That Has Been Observed in US Nuclear Power Plants.—Experiences, good and bad, should be shared freely. If the present regulatory system makes it difficult to be frank about some of the incidents that have occurred, as some have claimed, those responsible for plant operation should work to correct this situation. It appears, in retrospect, that if information, that al- ready existed, on observed and ex- pected behavior of B&W reactors had been available to the operators at TMI d) CHERNOBYL—LESSONS LEARNED 2 this accident could have been avoided. But those responsible for safety should go beyond what has oc- curred. For example what instrumen- tation, not then available, might have either prevented or ameliorated the consequences of the TMI 2 accident? What would have been the conse- quences if the TMI 2 accident had been accompanied by loss of off-site power? What emergency measures could have been devised under those circumstances? Further Attention Should be Given to the US Practice of Testing Reactor Power Plant Systems While the Plant Is In Operation.—Testing at power is now done presumably because such testing enhances system and plant re- liability. Little or no attention is given to the possibility that such tests may introduce severe transients or accidents. Although no serious acci- dents have been initiated in the US by testing during operation, numer- ous examples exist of automatic shutdowns that have been caused by mistakes made during a test. The results of a recent study reported by the MITRE Corporation indicate that in the period 1984-1985 about 20 per- cent of the reactor trips, for which a cause could be identified, were due to errors made during testing and maintenance carried out during plant operation.’ The Japanese, it ap- pears, do not test plant systems during operation, but rather test during down time. The Chernobyl accident empha- sizes the need for additional exami- nation of this issue. Emphasis on Severe Accidents—Since TMI 2 there has been a significant em- phasis on dealing with severe core damage accidents. Further, most in- vestigations of severe accident sce- narios have assumed that once the capability to cool the core has been lost, the core will, in a very short time, become completely molten; and that all of the molten core, plus some frac- f) 137 tion of the core supporting structure will penetrate the vessel and reach the containment floor (or alternatively will be sprayed into the containment atmosphere). Although such studies provide useful information, we may have, as a result of this emphasis, failed to place enough emphasis on prevention of core melt, and on the possibility of arresting, in-vessel, the progression of a core melt once it has begun. Experience at TMI 2 demon- strates that partial core melt does not necessarily lead to complete core melt, or to vessel penetration. Chernobyl has produced considerable discussion of containment performance. While there is general agreement in the US that existing power reactors should have containments, it is not clear that all of the existing US containments would have contained the Chernobyl accident. In any event it is clear that prevention needs continuing empha- sis. What avenues should be explored? Studies should be made to determine which normal operations, and which emergency Operations, now per- formed manually, should be auto- matic. Those that are now automatic should also be examined. (Incidentally whatever decision is reached must be carefully explained to the plant oper- ators, since operators are ingenious in disabling or ignoring systems in which they have no confidence.) Some Jap- anese companies have already made progress in automating both opera- tions and testing.® There Should Be Further Examination of Emergency Planning—Much of the emergency planning in the US is based on the assumption that there will be evacuation beginning perhaps as much as two hours before any major release of radioactive material occurs. The ex- perience at Chernobyl indicates that releases may occur without this warn- ing time. The Soviets report that their plans for evacuation could not be used in a situation in which significant re- 138 WILLIAM KERR leases had occurred before evacuation began. It is interesting that there have been re- cent studies in the US, making use of in- formation collected from a number of evacuation drills held in connection with NRC requirements, which indicate that US officials are likely to be reluctant to order evacuation until a release begins. The studies indicate that under these cir- cumstances immediate evacuation may not be the most effective method of pro- tection of the local population. Under some circumstances sheltering, followed by later evacuation of selected fractions of the population, may be more benefi- cial.’ Furthermore, our present emer- gency planning is not geared to an emergency of the magnitude encountered at Chernobyl. The formalized parts of the plans, the detailed planning and the drills do not consider such an emergency be- cause of its small likelihood. The ability of the Russians to marshal the resources of material and manpower needed to cope with the Chernobyl accident is impres- sive. Some preliminary thinking about how we might approach recovery from such a disaster would be worthwhile. The disaster for which such planning might prove useful is unlikely to be a nuclear plant. But it would be worthwhile for some agency, probably FEMA, to give further thought to coping with large-scale emergencies. The Soviets apparently made considerable use of military per- sonnel. In any event their ability to co- ordinate such a large effort rapidly and efficiently deserves serious study on our part. Conclusions Although it is generally agreed that an accident similar to that which occurred at Chernobyl cannot happen to a US reac- tor, there are features of the accident from which US plant operators can learn. Since serious nuclear power plant acci- dents occur infrequently, it is incumbent upon us to learn as much as possible from those that do occur in order that the likelihood of future accidents be made low. Lessons learned can contribute not only to public safety, but also to a more reliable source of electric power, and to the financial stability of utilities which op- erate nuclear power plants. References Cited 1. Editorial Comment from ‘“‘Nuclear Powered Ships”, Phoenix, University of Michigan Mem- orial Phoenix Project, 1962. 2. “The Accident at the Chernobyl’ Nuclear Power Plant and Its Consequences”, USSR State Com- mittee on the Utilization of Atomic Energy, Vi- enna, Austria; August, 1986. 3. “Report on the Accident at the Chernobyl Nu- clear Power Station”, NUREG-1250, US Nuclear Regulatory Commission, 1987. 4. “Report of the US Department of Energy’s Team Analyses of the Chernobyl-4 Atomic Energy Sta- tion Accident Sequence”, DOE/NE-0076, US Department of Energy, 1986. . R. Wilson, Private Communication. . See, for example, M. K. De and W. Kerr, “ATWS: A Retrospective”; Proceedings of ANS Topical Conference on Anticipated and Abnormal Transients in Nuclear Power Plants; Atlanta; April, 1987. 7. S. Seth, R. Lay, G. Malone; “‘Balance-of-Plant Transients: A Review of Recent Experience’; Proceedings of ANS Topical Conference on An- ticipated and Abnormal Transients in Nuclear Power Plants; Atlanta, Ga.; April, 1987. 8. M. Makimo and T. Watanabe; “Operational Ex- perience of Human-Friendly Control and Instru- mentation Systems for TOSHIBA BWR Nuclear Power Plants”; Proceedings of ANS Topical Con- ference on Anticipated and Abnormal Transients in Nuclear Power Plants; Atlanta, Ga; April, 1987. 9. Frank R. Rowsome, ‘‘Assessment of the Effect of Evacuation on Risk for Indian Point’’, enclo- sure in a letter dated July 28, 1987, Rowsome to Thomas E. Murley, Director Nuclear Reactor Regulation, USNRC. NN Journal of the Washington Academy of Sciences, Volume 78, Number 2, Pages 139-142, June 1988 Somewhere Between Ecstasy, Euphoria and the Shredder: Reflections on The Term **Pro-Nuclear”’ Peter A. Bradford Chairman, New York State Public Service Commission Albany, NY 12223 In devising sensible nuclear regulatory policies for a post-Chernobyl world, it is important to try to identify the signifi- cance of Chernobyl. You are hearing from others better qualified than I am on the subjects of radiation effects and accident sequences. I will address the regulatory environment and, with some hesitancy, the broader political and governmental environment. In these contexts, Chernobyl acceler- ated forces that were already in motion, and it may have made irreversible some trends that were dominant in any case. It has certainly made life more difficult for those who would license Seabrook, Shoreham or the other plants remaining under construction, but I don’t think that it has produced a fundamental realign- ment of forces in this country. Let me explain. Nuclear power in this country has never stood lower in public esteem. The polls are clear on this point, and Maine voters may well this November vote to close a nuclear power plant that they have twice 139 in this decade voted to keep open. Sea- brook and Shoreham together have $10 billion invested in them, and I have yet to hear even one among the dozen pres- idential candidates urge that they be op- erated. Nor do any urge that more plants be built. The nuclear industry in the late 1970’s blamed its declining fortunes in substan- tial part on an “antinuclear” president and on “antinuclear activists” at the Nu- clear Regulatory Commission. Indeed, the President of the Atomic Industrial Forum said that the nuclear industry’s re- action to President Reagan’s 1980 victory was ‘‘somewhere between ecstacy and eu- phoria.”’ Well, we are now seven years into the most ‘“‘pro-nuclear”’ presidency in our his- tory. Yet the nuclear achievement of the 1980’s is closer to Ralph Nader’s agenda than to Ronald Reagan’s. —The Clinch River Breeder is gone. —So is reprocessing. —The waste repository program is stalled and mired in nationwide con- 140 PETER A. BRADFORD troversy. The target date has slipped a year for each year of the program’s existence. —No new plants have been ordered since 1977. —Every plant ordered since 1975 has been cancelled. —Legislation to “‘streamline”’ the licen- sing process for new plants has gone nowhere in twelve straight Congres- sional sessions. At the bottom of this collapse is a de- cline in public trust almost without par- allel in industrial history. I suppose that one could argue that the Hindenburg was to dirigibles what Three Mile Island and Chernobyl were to nuclear power, but air travel has seen worse accidents since, and—in recent months at least—highly publicized near misses and ineptitude. Yet many people opposed to nuclear power still fly; a lot of them sit in the smoking section. To judge from the operating record in the U.S. to date, nuclear power is a rel- atively low risk public health proposition. It’s impact on public health has almost certainly been better than coal to say nothing of the automobile. Still, the public does not trust it— and endorsements of all sorts from scientists and public health officials through the years haven’t changed that situation. Nor has the enthusiasm of a popular president or the adoption of reasonable safety goals. Unlike most NRC commissioners, I have lived for most of the last 15 years within a fairly short distance of an oper- ating nuclear power plant, one whose op- erating history and economics have been favorable, one that may well not obtain majority support this November in a state where 95% of the electorate lives beyond the 10 mile zone. I have friends who are long term op- ponents of the plant and friends who have come recently to that view, as well as some who still support keeping it open, as I did in the two earlier referenda. I can tell you with some confidence that the concerns of those who oppose it will not be met by some new way of presenting the data or by a public relations cam- paign. The matters that dismay them about nuclear power do not reach them on that level. They include the following: First, Three Mile Island and Chernobyl caused a massive discrediting of the ‘“‘ex- perts,” a discrediting that has in any case been going on throughout our society since Vietnam and that has recently been embodied by the Challenger, by the Iran/ Contra affair, by Bhopal, by disillusion- ing conduct among Fundamentalist min- isters and by Gary Hart. For each of these events you can find many people saying, ‘“T used to believe in [fill in the blank], but I don’t any more.”’ This destruction of misplaced faith is basically healthy, but a craving for faith remains. If that craving is filled by the casual embracing of yet another unrelia- ble creed, the inevitable cycle of betrayal can only lead to levels of cynicism and apathy that threaten democracy itself. The alternative of a more active and in- formed citizenship is one about which nu- clear proponents have at best been schizophrenic, and their tolerance for those among them who would frustrate or dismiss public inquiry has bred wide dis- trust among people who know little about man rems or defense-in-depth or safety goals. Second, the failure to achieve a waste program concensus is deeply perplexing to anyone inclined to believe that nuclear power is in good hands. To state that the waste problem is largely political is not to discredit those concerned about it. Indeed their concerns, nontechnical though they may be, are not an irrational response either to the general decline of faith in expertise or to the specific self-destruc- tion of the Nuclear Regulatory Commis- sion’s public position. Of that, more later. I cannot leave the nuclear waste issue without remarking on the devastating counterproductivity of last year’s maneuverings regarding the REFLECTIONS ON THE TERM “PRO-NUCLEAR” 141 second round repository sites. If the De- partment of Energy had set out to un- dermine its own position, it could not have done so more effectively. The choice of several of the second round sites was ill-considered. One of the two in Maine was relatively highly pop- ulated, an area heavily dependent on tourism, an area dominated by Sebago Lake, which is the City of Portland’s water supply. DOE’s effort to defend the choice only made things worse. It is this venture even more than Chernobyl that has put the Maine Yankee referendum in doubt. To make matters worse, the Adminis- tration then, for political purposes, with- drew the entire second round process, infuriating the first round states without improving its position in the second round states, who were further dismayed when DOE moved gingerly to reinstate the pro- gram after the 1986 elections, which went against Administration candidates in every state in which the wastes were a serious issue. So transparent were the po- litical motives in these wrenching changes of course that those in charge lost all claim to being in pursuit of the technically op- timal solution. Now the intractability of the waste problem is cited to explain the political opposition while the political opposition is cited to explain the intractability of the waste situation. Those who urged a decade ago that we pay more attention to the wastes and less to the breeder, to reprocessing and to ac- celerated power plant licensing were re- garded (and disparaged) by the industry as being antinuclear. In hindsight, the sin- cere ones appear to have been among nu- clear power’s last real friends. Meanwhile what of the NRC? Given the source of my invitation, it would be impolite for me to dwell on that subject at length. The recent Union of Concerned Scientist book Safety Second says about what I would (or, in some cases, did) in any case. I will, however, spend a moment on lessons that I think the Administration, the NRC and the industry need to learn about the consequences of excessive zeal in the setting of public policy. These les- sons are not unique to nuclear power; in- deed they emerge just as clearly from our recent exposure to Iran/Contra policy- making, with which our nuclear experi- ence shares the following: First, both sets of policies have lavished discredit on their intended beneficiaries and goals, beneficiaries and goals that may at one time have deserved better fates. Second, both sets of policies have been driven by obsession and ideology in di- rections directly contradictory to funda- mental and bi-partisan American principles. Third, the label “‘national security” has been so abused in both contexts that its repetition has come to warn of skuldug- gery rather than justify the policy. Fourth, funds have been channeled— publicly when possible, clandestinely when necessary—in ways inconsistent with professed policies (‘‘no dealing with terrorists’ in the one case, “‘noninterfer- ence in the free market” in the other). Fifth, in both cases we have assisted foreigners in travelling roads that the Congress, public opinion or other forces constrain the U.S. government from trav- elling itself (reprocessing and breeder re- actors in the one case; grants of money for arms through Switzerland and Costa Rica to the Contras in the other). Sixth, both sets of policies have been promoted in the U.S. by private groups spending large amounts of privately raised money but coordinating closely with the relevant agencies of the federal government. Seventh, in both programs lack of ac- countability, easy access to too much money and a pervasive mistrust of the American public has furthered interests inclined in any case toward arrogance and self-enrichment. Finally, in a bizarre irony, both sets of policies have benefitted the Ayatollah im- 142 PETER A. BRADFORD measurably. In the one case we have un- dermined our domestic energy policy in ways that have tended to support the price of his oil; in the other we allowed his agents to ensnare us in a vat of global humiliation whose bottom is not in sight. So what does it really mean to be “‘pro- nuclear” or “‘pro-Contra?” If one believes that the answer to Harold Denton’s ear- lier question is that reactors are a “‘good bet,’ what to do about their manifest un- popularity? At the very least, a pro-nuclear policy would have the following characteristics: First, it would take the public and our democratic and federal/state systems of government as a given, not something that can be manipulated to private ends. Engineers who know perfectly well that the boiling point of water at given pres- sures cannot be manipulated much seem unwilling to learn that the public also inevitably boils over (granted that the precise moment cannot be predicted) in the face of accumulated disillusionment on a threatening topic. Obvious or gauzy though this first prin- ciple may sound, it cannot be said to un- derlie the preemptive features of the Atomic Energy Act or the NRC’s pro- posed rule on emergency planning, to name two examples. Second, a truly “pro-nuclear’’ policy would accept “‘no”’ for an answer at some sites. It is one thing to preempt on-site safety findings to the federal level. It is another to require states to operate the plants in the face of their own adverse off- site emergency planning conclusions. The issues of fairness to investors and impact on rates are much more familiar to the states and to the courts than they are to the NRC, and they should be left there. Third, the next few years must be ac- cepted as a time of consolidation. Expe- dited licensing should be explicitly disavowed. The operating plants and the wastes should be the sole focus of atten- tion. Public opinion should be allowed to follow performance. Fourth, the industry must realize that it can only lose public trust when it de- mands that Jim Asselstine not be reap- pointed to the NRC while maintaining a dignified silence about conduct—and I have in mind shredding or other loss of documents relating to an investigation— elsewhere on the NRC, an event for which any utility would have to sack its own vice president for nuclear operations. This is, I know, superficially impolite to say, but no safety goal, no statement of good intent can transcend a lack of public confidence in those who must enforce it. For the industry to accept such conduct because it comes from someone whom they have labeled “‘pro- nuclear” is, in fact, profoundly anti- nuclear conduct. Finally, to decompress a bit, nuclear plants in the future must expect to com- pete on a levelized per kilowatt hour and per kilowatt basis with other sources of electricity. Otherwise no state commis- sion will certify them. I don’t know that the public will ever be willing to accept more nuclear units. What I have tried to outline are some of the conditions under which they might, though not soon. If these conditions are unacceptable to the industry, if the in- dustry response continues to be—as it was in the 1970s—that such conditions would mean an end to new nuclear units, then I do know the outcome after all. It is not necessarily the wisest public health outcome measured in terms of en- vironmental impact, but an energy source that has as a precondition the belief that the public’s concerns must be “‘stream- lined” away will not be judged on envi- ronmental impact alone. More importantly, the fortress mental- ity that goes with such conduct will ulti- mately encourage unsafe practices that will vitiate safety goals, safe designs and years of safe operations. That is the cycle that led to Three Mile Island, if not Cher- nobyl. In this cycle, Chernobyl has deep- ened a downswing that it did not initiate. Journal of the Washington Academy of Sciences, Volume 78, Number 2, Pages 143-147, June 1988 Industry Evaluation and Response Byron Lee, Jr. President and Chief Executive Officer, Nuclear Management and Resources Council, Inc. Washington, DC 20036 I am pleased to be a participant in this important symposium. It is clear that the speakers include some of the top radiation health experts in the country. My inten- tion this afternoon is to summarize the results from the U.S. nuclear power in- dustry evaluation of the Chernobyl acci- dent, and to describe to you the manner in which we responded and how we com- municated our conclusions. I will share some thoughts on my favorite (and now well rehearsed) topic, the near term future of nuclear power and how NUMARC will help shape that future. I will then close with some thoughts on ra- diation health—not as a scientific expert, but as an individual representing the cor- porate executives in this country who are entrusted with the safe operation of nu- clear power plants, and who must apply the research and wisdom of radiation physics and medical experts to the public health aspects of safe nuclear operations in and around our plants. This afternoon’s session speakers are well qualified to discuss the environmen- tal, engineering and political implications of the Chernobyl accident. All have been deeply involved in assessing Chernobyl or in leading teams of experts charged with responsibilities for evaluating the acci- dent. I was asked by the Utility Nuclear Power Oversight Committee (UNPOC) 143 to chair the Industry Technical Review Group on Chernobyl in May 1986. The Group consisted of thirty industry leaders who shared the tremendous resources they represented to study the accident. They represented nuclear utilities, nu- clear steam supply vendors, architect en- gineer firms, universities, and industry Organizations such as the Institute of Nuclear Power Operations (INPO), the Electric Power Research Institute (EPRI), the Atomic Industrial Forum (AIF), the American Nuclear Society (ANS), and Edison Electric Institute (EEI). Our Group had three objectives: . To learn as much as possible of the causes of the accident as well as the post-accident response and recovery experience; . To identify whatever lessons there may be for U.S. reactor design, construc- tion and operation; and . To give direction to the response from the legitimate questions raised by this event. In my opinion, the industry responded quickly and effectively to the Chernobyl accident. We conducted extensive reviews of Soviet documents to understand the design and operation of RBMK reactors. 144 BYRON LEE, JR. A number of U.S. industry representa- tives participated in the post-accident re- view meeting held in late August 1986 to receive and analyze the Soviet written report of the Chernobyl accident. We conducted a significant amount of inde- pendent analyses of the Chernobyl acci- dent, which generally agreed with analyses by our U.S. government agen- cies and by foreign countries. We helped write the U.S. “Report on the Accident at the Chernobyl Nuclear Power Station” (NUREG-1250) which was a joint report prepared by the NRC, DOE, FEMA, EPA, and two industry-sponsored organ- izations, EPRI and INPO. Hundreds of industry personnel have conducted brief- ings for local, state, and federal officials, as well as the general public, on the Cher- nobyl accident. The Industry Review Group on Cher- nobyl prepared two documents: The U.S. Nuclear Industry Position Paper on the Chernobyl Nuclear Plant Accident in the Soviet Union, and The U.S. Nuclear In- dustry Plan of Response to the Soviet Nu- clear Plant accident at Chernobyl, both dated February 2, 1987. The “Position Paper” reviewed the Group’s assessment of the accident, including the conse- quences and the causes of the accident, and has been given wide distribution. Our general conclusion was that the accident was the result of significant design weak- nesses coupled with several human factor breakdowns by management and the op- erators of the Chernobyl Nuclear Power Plant. It was the consensus of the Group that one cannot be separated from the other, but that the ‘root cause’’ of the event was design weaknesses. As we became more familiar with the Soviet RBMK reactor design, we recog- nized how difficult it is to make direct comparisons between the Soviet RBMK and the U.S. LWR. The differences were so great that a strong consensus began to emerge from the technical experts in the industry that this accident had little direct relevance to U.S. light water reactors. Nevertheless, we were committed to a thorough search for any possible lessons or insights. Our conclusions compared well with the conclusions drawn by the NRC, DOE, Congress, the national lab- oratories, and the mainstream of the U.S. scientific and academic communities. The Industry Position Paper presented three major conclusions that emerged from our analysis: 1. The design and institutional differ- ences between the Chernobyl-type, water-cooled graphite reactor and U.S. light water nuclear power plants are so fundamental that the Soviet ac- cident should not impact the processes of design and regulation of U.S. nu- clear reactors. The accident does point up the importance of the emphasis that the U.S. plants place on high quality training and procedures, and strict ad- herence to administrative controls. 2. The Chernobyl accident confirms U.S. choices in nuclear technology, sup- ported by our public regulatory pro- gram. A very deliberate determination was made at the foundation of the U.S. nuclear industry that we could not tolerate the same risks as other indus- tries. From the beginning, conserva- tive reactor plant and containment designs, high safety standards, de- fense-in-depth, and operating disci- pline were imposed. Our record of protecting the public is an affirmation of our safety philosophy. 3. Comparisons made between the Soviet accident and the less severe Three Mile Island accident led to very important observations. The TMI-2 accident caused no physical harm to the public or the plant’s workers, primarily due to defense-in-depth design features in- cluding a full containment. However, the TMI-2 accident identified weak- nesses in U.S. reactors and their meth- ods of operation. Major industry- initiated self-improvement efforts were made as a result, which are con- tinuing to this day. As I mentioned, our group also pre- INDUSTRY EVALUATION AND RESPONSE 145 pared a ‘Plan of Response”’ to Cherno- byl. This document covered efforts already taken and those that we believed needed to be considered more thoroughly by the industry for future action. You should all recognize that the plan is a roadmap for a comprehensive search for lessons to be learned from Chernobyl. Even though many of us had high confi- dence in our own technology and stan- dards of operation, we felt that as a responsible industry we must undertake our Own review to satisfy ourselves that potential lessons were learned and ap- plied. The Plan is broken into three levels of response. Level I covers the evaluation of the accident and the identification of find- ings. Many different industry organiza- tions were asked to help complete the reviews called for by the industry plan. These efforts are proceeding well and are essentially complete. © Level Ii addresses the challenges to U.S. nuclear safety in light of the Cher- nobyl experience. Most are not a result of any specific findings from Chernobyl, but more a result of issues raised by public concerns, NRC, and the media following Chernobyl. In addressing these chal- lenges, the industry has conducted, and will continue to conduct, a thorough search as more information becomes available for potential applications of the Chernobyl experience to our reactors. Our level II efforts are leading to con- clusions that generally dovetail with ex- isting safety initiatives. We are finding that the lessons of Chernobyl either con- firm actions already taken or add further confirmation that ongoing efforts are ap- propriate. No situation has been found that indicates a blind spot in our own de- signs, regulations, or operational prac- tices. Rather, we are finding a few areas that need to be reemphasized, repriori- tized, and in some cases expanded to take advantage of new insights. These results appear to be completely consistent with my reading of the NRC’s recently released draft NUREG-1251: “Implications of the Accident at Cher- nobyl for Safety Regulation of Commer- cial Nuclear Power Plants’’. The NRC has concluded in their report that ““No immediate changes are needed in the NRC’s regulations regarding the design or operation of U.S. commercial reactors.”’ The NRC has also determined that: ‘““The most important lesson is that [Chernobyl] reminds us of the continuing importance of safe design in both concept and implementation; of operational con- trols, of competence and motivation of plant management and operating staff to operate in strict compliance with controls; and of backup features of defense in depth against potential accidents.” I agree wholeheartedly with those statements and am confident that the en- tire leadership of the nuclear industry supports them also. Level III of the Plan suggests an in- creased participation by the U.S. industry on the international nuclear scene. The industry has been involved in interna- tional activities through EPRI, INPO, AIF, ANS, and individual company con- tacts, but has had no comprehensive or coordinated international program. It was the consensus of our group that a more coordinated and involved industry pres- ence is required. The Chernobyl accident has provided this industry with a vivid case study in the results of complacency in reactor opera- tions and a reason to continually strive to improve our operational performance. I would like to briefly review for you some of our actions to demonstrate our own commitment to operational excellence. To fully appreciate industry actions to im- prove operational safety, we need to con- sider briefly what has happened since the TMI accident. In the early days after TMI, the In- stitute of Nuclear Power Operations (INPO) and the Nuclear Safety Analysis Center (NSAC) were created. The Sig- nificant Event Evaluation and Informa- tion Network (SEE-IN) program was developed, and operating experience and 146 BYRON LEE, JR. safety information was shared on the ‘Nuclear Network” electronic mail sys- tem. INPO began setting standards of ex- cellence in nuclear operations through a variety of assistance, evaluation, and monitoring programs. The National Academy for Nuclear Training was formed in September 1985. Over 600 nuclear training programs were completed at our operating nuclear plants and made ready for accreditation by the end of 1986. The industry, through INPO, devel- oped a set of performance indicators over four years ago. The program was refined in 1985, and ten overall indicators now provide an important management tool for monitoring plant performance. Trends over that four year period show significant progress by the industry in most of these areas. The utility industry has not rested on its record and is looking to the future. It has developed, with the help of EPRI, nuclear suppliers and architect-engineers, an advanced light water reactor program drawing on our experiences that should provide extremely safe standardized re- actor designs available to meet the in- creased base load demands of the mid and late 1990’s. These designs emphasize op- erational simplicity and human factors en- gineering. A detailed study of the industry’s ac- tivities was initiated by the utility lead- ership which resulted in the publication in August 1986 of a report entitled ‘“‘Lead- ership in Achieving Operational Excel- lence: The Challenge for All Nuclear Utilities,” better known as the “‘Sillin Re- port.”’ The authors were three gentlemen with vast experience in nuclear power— Lee Sillin, Marcus Rowden, and Dennis Wilkinson. The report proposed recom- mendations in three. major areas: 1. Improving operational performance of nuclear power facilities. 2. Improving the nuclear utility interface with the NRC. 3. Establishing a unified nuclear utility industry organization. When the Sillin Report recommended the establishment of a unified nuclear util- ity industry organization that would in- terface with the NRC, many in the industry felt we already had the basic ele- ment that was needed in the Nuclear Utility Management and Resources Com- mittee formed in 1984. For three years the NUMARC executives had been interfac- ing frequently with the NRC staff to iden- tify areas in our industry where improvements could be made. A positive course of action had been taken on a num- ber of issues. We believe that through this process an increased sense of cooperation and trust has developed between the NRC and the industry. We view our new or- ganization, the Nuclear Management and Resources Council, as an opportunity to build further upon the successes this pro- cess has achieved. The Nuclear Management and Re- sources Council, retaining the acronym “NUMARC,” was established to provide a unified nuclear power industry ap- proach on generic regulatory and tech- nical issues. Our responsibilities include coordinating the combined efforts of licensee utilities, and other industry or- ganizations that are NUMARC partici- pants, in all matters involving regulatory policy issues, and on the regulatory as- pects of operational and technical safety issues. NUMARC serves as the industry’s principal mechanism for conveying our views, concerns, and policies to the NRC and other government agencies as appro- priate. We will also initiate industry self- improvement efforts when deemed nec- essary, and direct attention to and act on regulatory issues the NRC considers im- portant. We carry out our responsibilities by drawing upon the knowledge, operational and technical experience, and safe oper- ational responsibility of the entire nuclear INDUSTRY EVALUATION AND RESPONSE 147 industry. We seek to improve the indus- try’s effectiveness in developing and ana- lyzing information concerning generic regulatory technical and operational is- sues and to improve the quality and con- structive character of contributions made by the industry to the evolution of regu- latory analyses and decisions. NUMARC must work closely with the industry and with the NRC—the two ma- jor repositories of nuclear operational safety expertise—to further enhance the industry’s pursuit of operational excel- lence. NUMARC is dedicated to improv- ing communications between the industry and NRC. We believe very strongly in the publicly controlled regulatory process. We believe that process best serves the public if the regulator and the regulated industry treat each other with openness and respect, and always exercise technical objectivity. This formula has worked in other U.S. industries and in the nuclear industries of other nations such as France, Japan and Canada. Here in Washington this professional approach is periodically branded as ‘“‘Coziness.”’ A few real or per- ceived abuses of open communications have preoccupied the thinking on the NRC/industry interface to the exclusion of the thousands of sound technical in- terfaces that occur each year. They also cause us to forget the overwhelmingly positive safety and economic benefits to the American people from a less adver- sarial approach. It is the same spirit of cooperation and professional exchange that I wish to offer to the medical and health physics com- munity. Our industry respects the re- sponsiveness and technical objectivity of the U.S. experts on radiation health ef- fects who have contributed to the body of knowledge and public awareness since Chernobyl. I would encourage you to continue to help in the important effort of educating the public and the media on radiation health effects. The public needs sound scientific estimates of the real risk associated with radiation exposure. They have become confused by bounding or conservative upper limits. The public par- ticularly needs help understanding the un- certainty in health effects predictions for very low doses of radioactivity to large populations. Much of the confusion and debate on nuclear issues are not based on legitimate technical arguments. In many cases, these situations have been exacerbated by false claims in the media that a Chernobyl-type accident could happen at these reactors. These situations have been exacerbated by a lack of public understanding of the nature and relative importance of radia- tion health risks, and the level of emer- gency planning in place in the U.S. in the unlikely event of nuclear accident. The future of the nuclear option will depend on educating the non-technical policy makers and the majority of the public on the benefits and risks. I think it is important that we focus our educational efforts toward three groups: first the broad medical community, par- ticularly the younger generation of med- ical students and professionals; second, our public and private schools as they are gearing up with renewed interest in the sciences; and finally the media, who des- perately need more expertise in this field. I am optimistic about the future role of nuclear power in this country. I believe the nuclear option can be improved sig- nificantly by improving the credibility of the regulatory environment. That is one of NUMARC’s objectives. In closing, I would like to stress that our industry has made a substantial in- vestment in reviewing and assessing the implications of the Chernobyl accident. We have determined the responses needed and are taking action toward im- proving our operational performance. We at NUMARC are dedicated to doing our share. We must all work together to en- sure the continued viability of nuclear power in the energy needs of our nation. Journal of the Washington Academy of Sciences, Volume 78, Number 2, Pages 148-157, June 1988 Round Table Discussion: Environment and Engineering DENTON: Getting back to the new dosimetry estimates from Hiroshima/Na- gasaki, I was at the ICRP (International Committee on Radiation Protection) meetings in Lake Como last week, and the new papers by Preston and Pierce would indicate that the cancer risk from that radiation probably will go up by at least a factor of five. It may go up less. It may go up more, but right now the factor of five increase in cancer risk seems to be where it is going. This would then mean that the health effects to workers in the field may have to be adjusted by that factor of five; it may or may not be that. The last speaker, Mr. Lee, was saying that in fact you now have excluded work- ers from having in excess of 5 rem per year, but there is still a reasonably large group, I would think, perhaps 8 or 10 per- cent of the tail of your population of ex- posures, that may be getting between 1 and 5 percent. I think about 90 to 95 per- cent get under 1 rem, if I’m not mistaken, in the point of .6 or 600 mg. These points may in fact require in- creasing the safety components to still lower than 1 to 5 rem exposure. Will in- dustry be prepared to do so? LEE: After all the technical experts in the world analyze that information, and if the conclusion is indeed that is a fact and that the risk is considerably higher, I think we will work on trying to reduce the exposure limits at our facilities. As you point out, for the vast majority of our 148 employees, the levels are extremely low in comparison to the standards. We have been working with the efforts here to keep moving that down, and that will continue to be our goal. But again, this is where we have to rely on the ex- perts. We have to avoid jumping into doing things hastily before we have some kind of a conclusion from the experts, but I’m sure if that’s the fact, we will respond accordingly. DENTON: Dr. Wald, how do you see that data? Would you like to comment? WALD: I haven't really seen the data either. I think it’s probably premature to say what it will do. KERR: Refresh my memory. I thought I remembered that the BEIR III reports (Committee on Biological Effects of Ionizing Radiation of the National Academy of Sciences) that we are still not certain that a one-time exposure of 10 rem has any significant harmful effects. Isn’t that the case? SPEAKER: BEIR III says the epide- miological data cannot prove below 10 rem whether or not there is a cancer effect because you don’t have a population size large enough to make that study. BEIR III also says there are three potential ways of doing risk estimates: the linear, the lin- ear quadratic, and the quadratic. BEIR III chose the linear quadratic as its most reasonable way of recommending risk es- timates. I think the present NCRP/ICRP risk estimates—and I’m not sure now whether ENVIRONMENT AND ENGINEERING 149 EPA adopts this—generally internation- ally suggested that 1 rem of exposure had a probability of inducing one cancer per 10,000 people, one rem exposure to a population. What I’m saying now is—and BEIR probably adopted a number of about 1.7—that number is up by a factor of five, if you look at the new dosimetry data and recalculate the cancer incidence in Hiroshima/Nagasaki. That is essen- tially what Gil Beebe was referring to this morning, but he didn’t have the final data. KERR: It seems to me what you were referring to is not really calculating the risk estimates for large populations but, rather, dealing with fairly small popula- tions of people who work in nuclear power plants. My next question was going to be, if my memory was correct, and I wasn’t sure it was, Is the next edition of BEIR III going to make about that same statement? SPEAKER: BEIR V is now in prep- aration. In fact, Arthur Upton is chairing the BEIR V committee. It expects to have its report completed, I believe, by Sep- tember of 1989. So both BEIR V and the newest UNSCR will be coming out within six months of each other. They will have this new data. But neither the BEIR com- mittee nor the UNSCR Committee make recommendations with respect to risk lim- its. All they do is provide the risk esti- mates that are used. KERR: I recognize that, but it seems to me, it’s one thing to predict estimates of populations, which one does in deter- mining risks to large populations, and it’s another thing to deal with a fairly small population of people in nuclear plants in a situation in which, if I interpret the BEIR III report correctly—and I may not; I’m certainly not a radiation biolo- gist—there is uncertainty as to whether low levels of radiation have any significant effect, which is what I am interpreting that statement to mean. SPEAKER: That is one interpreta- tion. It is not the one that would be used by most radiobiologists. I think we would argue that the linear quadratic model best fits the data, although we do not have a population size that would permit an ep- idemiological study at the levels of 10 rem or below at this point. KERR: I do not know what radiation biologists use or what they use it for, but when they tell me, as a possible user, ““We don’t know whether 10 rems of exposure to an individual has any harmful effect,”’ I guess I do not know what they mean if they don’t mean that this has some sig- nificance. SPEAKER: I think you took that out of context. They gave you a risk estimate down below 10 rem. They give you a risk estimate per rem, but say they cannot ac- curately—which is obviously true—make an estimate below 10 rem that they have great confidence in. It could be zero. The report that was just quoted by Marv Gold- man on the DOE report says that the number of cancers induced by Chernobyl could equally be zero or 28,000. That number now could go from zero to 85,000 with the new risk estimates, but very few radiobiologists would accept the value of zero, although it is not impossible. YANIV: Shlomo Yaniv, Nuclear Reg- ulatory Commission. As far as BEIR III is concerned, BEIR III did not give risk coefficients for single exposures below 10 rem or 20 exposures below 1 rem per year. They made a statement which was in BEIR I, repeated in BEIR III, that they do not know whether the level of expo- sure of those that are 100 mg per year are detrimental or not. With regard to Hiroshima/Nagasaki, I have seen the Preston paper, and as far as the dosimetry impact itself, it is de- pending upon the RBE chosen for neu- trone. It is on the order of two, not five, based on the paper. That does not imply that the risk coefficient that might come out of the deliberation and combination of the new radioepidemiological data and the dosimetry might not be higher, the reason being that it has to do with tem- poral projection of risk beyond the period of observation. ICRP-26, which has a risk coefficient 150 ROUND TABLE DISCUSSION of 1.25 times 10 to the minus 4 per rad in little cancers is based upon absolute risk projection UNSCR-77. A new UNSCR already has come out, which basically en- dorses a relative risk projection model. The new radioepidemiological data sup- port a relative risk projection model for most of the solid tumors, and that, in com- bination with a much higher relative risk observed dose irradiated young in life, will lead to a higher risk coefficient than presently is given in ICRP-26. HERN: John Hern. I have a question for Byron Lee. I have read the Sillen report. You talked a little bit about out- liers, and as I recall the report, one of the recommendations was that the nuclear industry identified publicly those outliers, those companies or plants that really were not performing well. What is the industry doing about that recommendation? LEE: That was one of the recommen- dations of the report. That was considered by the INPO Board, which I am not a part of, and the INPO organization has been re-reviewed several times. Their de- cision is that at the present time, they don’t think that is in the best interest of the effort to achieve excellence. We kind of beat ourselves very badly in this country in the media as it is. The old saying of taking somebody to the woodshed and beating them works on a rare occasion and in a really extreme case, but I don’t think, the industry does not think, INPO (Industrial Nuclear Power Organization) does not believe, that is the way to solve our problems; to expose to the public who happens to be the worst case. Georgetown is a good example. The worst student in the class obviously is above the level to get in here, but he is still the worst student. So you have to put it in perspective, and it’s like this radia- tion issue. The public does not read that situation. The headline will be, this is a plant that the industry thinks is bad. If the industry thought it was bad, they would take some dramatic actions, and you would know about it if they thought it was an unsafe plant. DENTON: Perhaps some other panel- ist would like to comment? KERR: I cannot speak for the indus- try, obviously, but one of the concerns I have had about INPO—and I have asked this question of INPO people on a num- ber of occasions—is that I think they have a good mechanism for identifying prob- lems, but I have not been able to discover a mechanism for dealing with recalcitrant organizations. There may be one, and if there is, I would feel better about INPO’s influence. SPEAKER: I don’t want to speak here for INPO, but I will have Zach Peyton or somebody else give you a contact on it. I think there are mechanisms that are in place to deal with it. BRODSKY: Allan Brodsky, George- town University. I would like to get back to talking about something like prepara- tions for something like Chernobyl or TMI, along the line of what Neal Wald alluded to this morning a little bit. In a moment, I am going to introduce another young friend, Dr. Ken Inn from the Na- tional Bureau of Standards to say some- thing along these lines because he wants to talk. Going back to the days of Three Mile Island, and we have seen some of the things after Chernobyl, there was a clamor to find out how much radiation exposure these people got, not only the workers but the public. I have heard a lot about, ‘“We don’t know what the doses to the workers were at Chernobyl.” I think we have a better handle on what the doses to workers were at Three Mile Island, in terms of the external exposures, because they wear badges. But I happen to know that in terms of estimating internal exposures, we were not prepared very well to examine what happened to some of those people im- mediately after the accident. You know that Three Mile Island called in a whole body count, two of them, about seven or eight days after the accident, and it took ENVIRONMENT AND ENGINEERING 151 them a little while to set up. One of them got contaminated and had various cali- bration difficulties. This shows, in the event of this rare incident of an accident in a nuclear power plant, that people do clamor to know what the exposures are in the first place, before you estimate what the risk are. In fact, how low are some of the exposures? This is something we have to be able to prove also. Neal Wald alluded to the fact that you have to do some planning for the internal exposures months and years in advance. I think he has to be given some credit for that kind of insight 20 some years ago, when he built a whole body count without any funds from the nuclear industry. Be- cause it was there, a number of very 1m- portant radiation incidents were handled without too much information in the news media, among non-nuclear, but materials facilities. Although these things were rare, we realize that they were important in con- text, because each individual who gets 20,000 or 50,000 rem becomes a very im- portant case. It’s important from both as- pects, both to take care of the individual and from the standpoint of the govern- ment officials who were very interested at that moment—they were all over the place after each one of these accidents— to be able to show that they were not only concerned about the individual, but they have been prepared to take care of that individual and follow up appropriately on each one of these cases. ] don’t want to over-emphasise this matter because I also believe that the probability of further accidents at nuclear power plants injuring any member of the public is extremely rare. But of course, we believed that before Three Mile Is- land, and it occurred. It turns out that after Three Mile Island, one of our col- leagues published articles saying that Dr. Allen Brodsky, an expert from the Nu- clear Regulatory Commission, has said that the internal exposures of people around Three Mile Island were 130 times what they have reported. They were tell- ing false information. I have copies of this headline: The government may be lying. Friends of mine called me up all over the country and said, ‘‘Brodsky, are you crazy, supporting that?’’ I said, ‘“‘He didn’t even consult me before he pub- lished that.”’ He pulled something out of context from the literature, where I cal- culated something for a full fission prod- uct release. Seven or eight articles came to me around the country about that. I couldn’t refute it. First of all, the media were not interested in publishing what I said at the time. I had gotten on a couple of programs, but that wasn’t adequate. But more importantly, when I ran into my colleague one day, he pulled out the item he found, but there were no specific measurements of the public that I could use, if I had to, to show how low some of these claims were. So it leads to a question for Byron Lee. In looking at the emergency planning again, from the lessons learned at Cher- nobyl, from the lessons learned at TMI, did you look at the possibility that for a relatively small sum of money compared to what we have been spending on emer- gency evacuation and planning and what else, did you look at the possibility that one could fund the training and the setup of some centers, such as Neal Wald did on his own, in at least a few places around the country so they would be ready in case another accident occurs? LEE: That is one of the things that Roger Linneman has been talking to the industry about; some increased capabili- ties to respond not to the public situation but to the internal situation. I think there is a possibility: We have all had in our plans, the capability to respond to one, two, or three individuals who were over- exposed. The question becomes, When you get a combination of an accident—steam burn situation is the most likely thing that would occur in the plants, we think—and low-level contamination, possibly, are we capable of handling that? We are. The tv 152 ROUND TABLE DISCUSSION industry has been taking a look at that. I know he has looked at the possibility of developing some major centers. But I think the conclusion they came to is that the capabilities already exist. There are some major medical centers that are ca- pable. You may disagree with that, but the feeling was that there are. In fact, I think Commonwealth Edison was one of the first, with Dr. Bud Main, to have a whole body counter at all of our plants, probably way back in 1970 or something like that. SPEAKER: Neal, I think, was correct in asserting that an accident the size of Chernobyl would tax our medical system. It’s remarkable how the Soviets were able to assemble so many resources so quickly, and he has made a number of proposals to the government that, so far, have not been acted upon, but that whole area is always worth considering. WALD: [’m Neal Wald, University of Pittsburgh. The question of the medical preparedness and the emergency prepar- edness to deal with medical problems is one that has, as Mr. Denton suggested, been occupying us for quite awhile. Our concern really is not with the Chernobyl size population problem, because we do agree that it is less likely because of our reactor designs and our operations. On the other hand, somewhere be- tween the individual worker who is in- jured at the plant and the 135,000 people that are predicted—even if you follow WASH 1,400 for some small or moderate sized accidents. The problem that con- cerns us is that if 50 people come to a hospital for attention, and the hospital is fully occupied, as they are, with their own problems and their own commitments to incoming patients, even though you think you have in your plan, and every one of the 105 operating reactors has a plan, we are not quite sure that the reality behind the plan is what we think it is. We have been proposing to the NRC, to FEMA, to the Department of Energy that the database should be compiled. I’ve never seen a listing by NRC of the 105 hospitals which are involved. I know you could probably dig this out in the public document room, but I don’t think we have looked behind the paper to any great ex- tent to see whether this is real. I point out, hospitals have a liability which requires them to take care of the patients in house. The fact that a hospital says it will handle a problem at a local plant does not mean that it can, willy nilly, dispose of the other patients or close down the emergency room without being at moral as well as legal risk. So the reality of some of these things in our medical system is a little different than it is in the U.S.S.R. I am not advocating changing the sys- tem to accommodate this particular un- likely problem, but I think we ought to at least compile a database to see what resources we really have in hand. I know of several institutions which come to everyone’s mind as being available. I also know that the head of one of these be- came professor emeritus at the beginning of this month, and this kind of thing, as I suggested in my talk, is going on. So what is listed now as being available on the basis of a look two or three years ago may not really be there. This is something we finally have been talking to EPRI (the Electric Power Re- search Institute) about, and I think EPRI is interested in the possibility of pursuing it. We will see. SPEAKER: Dr. Wald is certainly cor- rect that we don’t have the capability, and almost heroic measures of this kind will be necessary to get it to us. I would like to hark back to the years 1950 to 1955, when there was a very strong civil defense effort in this country. It was policy to alert hospitals to the requirements that radia- tion cases be dealt with and to inform the staff at hospitals how to do this and to tell what facilities had to be acquired at hos- pitals so as to take care of radiation cases that might arise as a result of civil defense requirements. That was a period when this capability that we see present in the Soviet Union ENVIRONMENT AND ENGINEERING 153 now was present in the United States. The Soviets were able to take care of Cher- nobyl principally because they have never relaxed in their civil defense efforts. They have maintained training of a large corps of physicians in civil defense activities as- sociated with radiation injury, and drew on this to a substantial extent. Not only was this true in the medical capability that they drew on, but the ac- tual physical response to the cleanup pro- cess took advantage of a great deal of thinking which had gone into civil de- fense. The activity that in fact was used to restore the Chernobyl area to some accessibility—to the degree that allowed them to restart Chernobyl I and Cher- nobyl II and to get ready to restart Cher- nobyl III later this year—that massive effort was incredible. It is something that we, in this country, are not capable of mustering on short order. BURLEY: Gordon Burley, the Envi- ronmental Protection Agency. I would like to pursue this question of lessons learned a little bit further. The general consensus after Chernobyl seemed to be that this was the type of accident that just couldn’t happen with our types of reactors. With the exception of some Department of Defense reactors, that cer- tainly seems to be true. However, Dr. Kerr also indicated that there are some things that we might want to look at out- side of the hardware. One thing that comes to mind is the commonality of hu- man errors. What I would like to know is, what has been done, in the light of Chernobyl and all the other reactor op- erating errors, to again look at this human factor from the broader perspective of preventing these major accidents? SPEAKER: I guess I’m not so sure how to respond to that very broad ques- tion. All I can say is that since Three Mile Island, that has been our major effort; to look at improving the operating capabil- ities, the capabilities of people to respond to events beyond what we had normally been training people for, to the emer- gency cases, maybe not as far as some people at this point believe we should. That is still one area that we are looking at and will have to look at. When you say the commonality of cause, I guess I am not sure what you are talking about. Human error is something that we understand is going to happen. I think we don’t give any credit on the other side for the human intervention. From an old operating standpoint, I would say that there are probably five cases where op- erators have prevented something for each case where they have caused some- thing. You never hear about that. There are all kinds of examples, like Brown’s Ferry that he referred to, although not that extreme, where operators have done things. People are ingenious, if they under- stand the plant and the circumstances, and you give them the ability to respond and to act on their own, not to follow prescriptions come Hell or high water. It’s amazing what good, trained, qualified people can do. That’s a key, and that’s what we're trying to do: to get people to better understand. One of the things they looked at in one area, and they will look at others, is symptom-based. It’s kind of like the physician: don’t just have pre- scriptive rules to follow; look at symptoms and have enough knowledge to under- stand or at least guess where you should go from that. INN: Kenneth Inn, National Bureau of Standards. The Chernobyl incident has sparked renewed radioactivity mea- surements in Europe. The Radioactivity Group at the National Bureau of Stan- dards is interested in providing standards which may make a positive contribution to needs you see as necessary, given the Chernobyl experience—for example, ra- dioactivity in foodstuff standards. I would like to ask the panel and the audience for suggestions as to what kind of standards you feel would be nice to have, good to have, necessary to have, so that we will be prepared in the future. PUSKIN: Jerry Puskin, E.P.A. After the Chernobyl accident, everyone might 154 ROUND TABLE DISCUSSION recall that in Europe there was a lot of confusion and inconsistency about levels that should be allowed in food. Some countries set their levels practically to zero and others followed ICRP (Inter- national Committee on Radiation Protec- tion) recommendations. That got us to thinking in this country too, because we really didn’t have that much of a problem here with respect to radioactive contam- ination. The simplest thing to do was to say, ‘““Let’s follow the FDA Protective Action Guides,” which allowed, depend- ing on the situation, one-and-a-half rem or 15 rem to the thyroid and one-third of that to the whole body. That is a nice marker, but these guides were devised for an accident that was acute, in terms of it happened immedi- ately and you don’t have too much time to respond, and people have to eat. I think both Chernobyl and TMI point up the fact that nuclear accidents, and re- leases particularly, often could be spread over time and you have plenty of time to respond. There may be cases where an area has its milk contaminated to a level which is lower than allowed by PAGs, but people could very easily obtain other milk which was essentially free of radioactive contamination. It wouldn’t make sense for them to drink that milk. The FDA guides actually allow for this, and the States have the ultimate respon- sibility for setting these. There are States like Oregon which recommended you not drink the rain water at that time. We need to think about setting levels, to use a dirty word in some quarters, on a LARA type of basis: we should set them as “‘low as reasonably achievable” given the circum- stances. We need better guidelines, de- pending on the circumstances and how acute it is, as to what is an acceptable level of contamination in food and milk. LEE: I guess I am not sure how you apply ‘“‘as low as reasonably achievable”’ to an accident event, if that is what you were inferring. From an industry stand- point, again, I think we have to turn to the experts in the field. We do need some kind of a number that is a reasonable number, that allows some safety factor in it. But again, I think we have the public confused. We deal also in the electric utilities business with PCBs and all of the other toxic substances. It’s not just radiation. It’s the same issue: what is a safe level? I live southwest of Joliet. It’s in a very high-limestone area. The radiation levels in the wells there—I remember at our Dresden II hearings, Meryl Eisenbud came out and testified that what we ought to do is spend our money working on the well water in the town of Joliet, rather than trying to take the squeal out of the pig coming out of the plant. I get a little thing in the mail that says, ‘Your water is above the safe guidelines for radiation, but don’t be concerned. We are working on it.” That, to me, is crazy. I get that about every six months from my water company because they are required to do that. That is not the kind of thing we need to do. I think we have to do something better than that, or the public is not going to believe any of us. SPEAKER: I would like to comment a little further on the earlier question about what is being done about human contributions to risk, because I personally think it is an extremely important ques- tion. Indeed, I would say that perhaps if we are going to make any significant improvement in risk, I think the risk is already clear, we probably should con- centrate on that area rather than on equipment. If you will recall, most of the investi- gating groups that looked at the TMI-II accident did recommend that more em- phasis be placed on human contribution. The human contribution, as Byron has said, can be both positive and negative, and we don’t know very well how to de- scribe it quantitatively. But experience certainly does indicate that not only li- censed operators but people who do maintenance construction, people who work throughout the plant can contribute ENVIRONMENT AND ENGINEERING 155 both positively and negatively to a trou- ble-free plant operation. I am trying to speak in terms of the industry, and I do not represent it very well, but it seems to me that most of the people involved in developing the nuclear industry up to now have been people with technical backgrounds—engineering, sci- entific—and they therefore feel more comfortable working on what one might call scientific, technical or equipment problems. They are not trained and do not understand very well how to deal with some of the human problems about which we need to know more than we now know in order to train people better, select peo- ple better, motivate them better, manage them better. All of those things clearly contribute to not just safer but more reliable and more economical nuclear power plants. Anybody who has seen power plants in operation, who has observed a number of them, who has compared them, knows how important these things are. But very few people, I think—maybe nobody— has a good recipe that says, ““This is the way you produce an organization that does a good job.” I certainly don’t know how to solve the problem, but I think we need to give it continuing attention. It is receiving some attention, both on the part of industry and on the part of the regu- latory agency. But from my view, the re- sults are still rather sparse and the study is in its infancy. SPEAKER: I would say that in all of these areas, the industry has put a lot of emphasis in the last few years. It is a grow- ing area. Human factors, before Three Mile Island, was a hardly recognizable term in this country. It has expanded and grown considerably. EPRI and INPO are working very diligently in those areas trying to develop programs to meet the concerns that Bill just expressed. We talked about one of the responses, I think, after Three Mile Island was in the human factors area. If you had asked at that point of time of the utilities, ‘““Did you apply human factors engineering to your control room?” the answer would have been yes. That is true. We did. We applied what was in those days human factors terms, but we were applying it to- ward normal operation as such. We had not really thought about the transience condition, and that was a major lesson that was learned at Three Mile Island. A lot of the instruments were behind the board and around the corner, and they weren't in a location that the operator or the supervisor or some person could quickly get a glimpse of the critical pa- rameters that were required. That was a major change that was made. , CONWAY: My name is Kathleen Con- way. I am a sanitary engineer, and I ex- pect that, given the illustrious and experienced company in this room, I am probably the closest thing you have to the great unwashed public. I would like to share a couple of experiences with you and then address some of the comments you made today. In the early 1970s, I went for a tour of the Pilgrim Nuclear Power Plant with a group of engineers. To my great embar- rassment, one of the engineers in the group asked why you cooled the water down after it goes through the blades of the generator. My embarrassment at his feeling the need to ask that question was overwhelmed by my shock when the guy from the power plant did not know the answer. That was kind of a surprise to me. I was sent for a health physics course this spring. We had a mix in the class of about one-third Canadians and two-thirds Americans. Most of the people worked at nuclear power plants. There were a few people like myself who were coming in for crash training. Most of them had been working for years in your areas. I found the discussions that the Canadians and the Americans would have about how their plants were managed and operated to be simply fascinating. The Canadians clearly were far more interested in training. They would tell sto- ries of having to go to six weeks of health physics classes before people were al- 156 lowed to push a broom through the plant, being five or six deep in the number of people who could handle a particular job at a plant. The Americans would tell sto- ries that, although they had educational requirements, they did not appear to be as demanding. It struck me that they were often only one or two deep for certain tasks, often had to rely on traveling gypsy bands of atomic workers. It seemed to be a different situation. In my work, I come across other risk numbers. I don’t find the ones that you present particularly frightening. I find your comparison to the coal industry very interesting. I find your track record as an occupational group looks pretty good. I think a lot of people in the public are capable of looking at numbers, comparing them, and deciding whether they look big or not. I think they are also capable of looking at people and saying, ““Would I buy a used car from this person?” I was not impressed at that power plant when that spokesperson could not answer a very simple question that really did not even relate to nuclear operations but just to the whole business of using steam to drive a turbine. I was impressed by the Canadians. I would have been very impressed, Mr. Lee, had you given Dr. Kerr’s speech. I found some of the comments about the confused public to be insulting. I am not sure that when the public does not agree with the position taken by an industry that it is because the public is ignorant or con- fused. I found Mr. Bradford’s arguments very sympathetic. I know that this would not be the place for you to be supporting those arguments. I trust that there are places where you can make some of those arguments effectively. I think if you are to restore the credi- bility in this country of the technology which actually holds promise—I mean, the Canadians seem quite happy with it, and the French seem quite happy with it, and indeed, as I said, I was impressed by the Canadians in this group—I think you are going to have to consider some of the ROUND TABLE DISCUSSION things that Mr. Bradford said this morn- ing and take a slightly different path. I know this is a little bit off what you were talking about earlier, but you had men- tioned the public a number of times, and I just thought I should give you that feed- back. SPEAKER: I was on a team that vis- ited Canadian plants recently in an at- tempt to become more international in our outlook, and they do operate their plants very well. SPEAKER: I would be the last person to try to justify ignorance as a recipe for operating a nuclear plant or anything else. Certainly, the accident at Three Mile Is- land had as one of its major ingredients a lack of understanding of the physics of fluids associated with the way things were going on in that plant. On the other hand, I would like to point out that this is not the only thing you have to take into ac- count, and the Chernobyl] accident I think was perhaps one of the strongest sources of recognition of this point. The Soviet attitude toward operators in nuclear plants is extremely different from that in the United States. It’s almost at the opposite pole. To be an operator in the Soviet Union, you have to be a li- censed engineer. You are a graduate en- gineer from a university. You go into an apprenticeship program for five years be- fore you can become a licensed operator at a nuclear plant, and then you have to pass the examination on your understand- ing of the plant. After some additional period—and I’m not sure what it is; I think it’s something like three years—you can advance to the next level of operator in the nuclear plant, and so on up the stage until you become a supervisor. It’s a very strongly structured program to em- phasize training and understanding of the way things go on in these plants. The Soviet scientists in Vienna last year told us that this was the key to why the accident actually took place. They said these individuals thought they were so good that they could do anything to that plant and get away with it. They did do ENVIRONMENT AND ENGINEERING 157 some things, and they didn’t get away with it. The only lesson I could draw at the mo- ment is that you have to balance your understanding of the plant with this con- cept that we have pushed in the United States, that Byron Lee talked so much about, and that is defense in depth. De- fense in depth is a management concept. It is a technical concept. It’s a thing you draw on to structure your defenses against mistakes that people make, mistakes that mechanisms make, and that still provide you safety back-up when you get failures of any of these kinds. The difficulty that occurred at Cher- nobyl was that there was not a defense in depth. At least there was not a defense solidly in depth, so that certain things could happen and did happen to the plant that could not be taken care of by the structure of the plant. This is the additional ingredient that I think cer- tainly took care of Three Mile Island and prevented widespread public disaster at that place and, I would hope, would do the same if we ever got into such a fix again. SPEAKER: Can I respond to one comment that was made about the con- fused public, versus the ones that disagree with me. I did not consider the people who disagree with me confused. I was talking about the masses: people who do not disagree with me or agree with me. I was talking about what I think. We dealt, in my business, with a lot of people. They were all our customers, the 7 million peo- ple. We met with them and talked with them and did a lot trying to educate. That is what I was basing it on, not the people who disagreed with me. STANGLER: Arnold Stangler from FEMA. I just wanted to comment on the medical services capability. As a result of some Atomic Licensing and Safety Board hearings, some Atomic Safety and Licen- sing Board Appeal Board hearings, and I believe a court decision involved U.S. Guard versus NRC and SONG’s facility, the San Onofrey Nuclear Generating Sta- tion, there has been an effort over the last nine months to reassess and reevaluate and improve the medical capability at all the operating plants. I believe there is a requirement placed on all utilities to respond roughly a month ago with their assessment. This included the requirement for a minimum of a pri- mary hospital, one backup hospital min- imum, and minimal medical and nursing staff to handle radiologically injured as well as contaminated individuals. All State plans also have an annex that would include the medical facilities. There is a requirement for letters of agreement for both the hospitals, the transportation ca- pability with ambulances, et cetera. So I think it would not be too much trouble to look these annexes up and assess the num- ber of facilities. In the case of the San Onofrey facility, I believe there is like a dozen hospitals within 15 miles but outside 10 miles of the nuclear power plant that have letters of agreement and have agreed to take care of injured personnel. SPEAKER: As part of our program— I cannot speak for all of the programs— we did work with those hospitals at least once a year to review the programs. It really was a training, drill kind of a pro- gram that we went through. STANGLER: Right. There is a re- quirement for an annual medical drill, minimum, for each hospital also. Journal of the Washington Academy of Sciences, Volume 78, Number 2, Pages 158-166, June 1988 Fear and Trembling and The Dog That Didn’t Bark: Policy and Science Keynote Address John F. Ahearne Vice President, Resources for the Future, Washington, DC 20036 I. Introduction I start by quoting from an economist: ‘. . .Pd just like to offer a few thoughts about the future, looking ahead. . . .I see the potential of big changes coming about in the future. . . .there are smart people everywhere. And there are people all over this world that are working very hard along with their smarts. So that this spread of capability and capacity is going to change the structure of the world econ- omy and the strategic situation, and we have to try to understand it. There is, I think, a gigantic amount of change in technology to go with this. . . .It’s acliche to say that it’s a small world but it is a small world. We are a big part of it. There is no way that we can, once again, as we did after World War I, sort of remove ourselves from the world—it is impossi- ble. The only question is how effectively are we going to engage. . . .And one of my fears right now is that somehow as we look at all of the difficulties and some of ©Resources for the Future, 1987 158 the things that you have brought out that there will be a tendency for people to throw up their hands and say, ‘Stop the world. I want to get off.’ We can’t get off, we have to be engaged.” Those are final remarks of Secretary of State Schultz, at the recently completed Iran/Contra hearings.’ I think they char- acterize the view of many people that technology is here, it is changing our life, it is changing the world. My comments address what role will technologists have? This evening I wish to address a range of attitudes about technology. I will focus on what has been called the hazards, or risks, of technology. By the phrase “‘policy and science,” you should suspect that I am concerned whether policy and science go together. I believe they can, but often they conflict. Tonight I will address some problems in the application of science to policy in gen- eral, and to radiation safety policy in par- ticular. I speak as one who has had the advan- tage and the disadvantage of spending al- most twenty years in Washington. This POLICY AND SCIENCE 159 city has been described as a bottleneck for information. The government and its associated support groups produce vol- umes, tons, of information, much of which does not seem to pass beyond the local area (usually described here as “‘in- side the Beltway’). The other difficulty is that the vast amount of knowledge, opinions, concerns, outside the Beltway seldom seem to penetrate effectively into Washington. The bottleneck works both ways. I will make three principal points to- night. First, I will remark on a particular argument in the area of technological risk, how safe is safe enough. Second, policy in the area of technology is strongly af- fected by three major groups. I will de- scribe at length one of the groups and some of the concerns I have with them. And third, how can technologists become more effective in developing policy, or affecting policy? My comments are in- tended to apply more broadly than to ra- diation safety policy. I intend them to apply across the spectrum of technologi- cal safety issues currently being addressed in the United States. Before I go much farther, I will identify the sources of my title. I have taken it from two literary allusions. Fear and Trembling is the title of a book by Kier- kegaard, a Danish philosopher writing in the mid-nineteenth century.” The book is based on a subject—appropriate at Georgetown—from the Bible, the Old Testament: how far can faith take a be- liever. The second is from a story by Ar- thur Conan Doyle, ““The Adventure of Silver Blaze.’ II. How Safe is Safe Enough? A debate that has particular signifi- cance to this conference’s topic is on the question: How Safe is Safe Enough? In recent years, the EPA has tried to apply cost-benefit analysis to answer this ques- tion for some of the activities regulated by that agency. This approach has been criticized on many grounds, including the inappropriateness of applying economics to safety, the absence of ethical consid- erations, and an over reliance upon tech- nical experts. However, economics as a conceptual approach is based on rational analysis. Economic analysis does use what are called utility functions. But it is incorrect to infer that such a definition of utility is restricted to what can be bought and sold. Utility can include non-market goods, such as the value of unsullied mountain slopes, clean air at the Grand Canyon, and other environmental amenities. It can also include what might be called psycho- logical satisfaction. Some discussions imply a confusion be- tween technology and the application of technology. This leads to the argument that a technology is unethical. Most tech- nology is neutral. I grant there are ex- ceptions: most would grant that poison gas is ethically negative. But usually, eth- ical issues are introduced in addressing how technology is used, under what con- straints or controls, but not the technol- ogy per se. The aspect of the debate which directly involves the role of the technical expert involves a specific issue, that un- derlies all Federal safety regulation: What is an acceptable risk, or, how safe is safe enough? This issue has been argued for decades. In a famous—to those in risk analysis— series of papers in 1975, published in The George Washington Law Review, Harold Green, an eminent jurist, and Philip Han- dler, a research biologist then president of the National Academy of Sciences, en- gaged in a discussion of—in Green’s term—the risk-benefit calculus used in safety determinations.* The debate is over ten years old—but is still fresh. Green wrote: ‘‘Whether or not something is accept- ably safe usually requires consideration of two aspects: an identification of potential injury and an assessment of the quantum of injury, and an identification of poten- tial benefits and an assessment of their magnitude and importance... . 160 JOHN F. AHEARNE ‘Scientists and engineers have an im- portant role to play in the making of safety determinations. Representatives of these disciplines are obviously better equipped than others to identify and quantify potential risks and to identify po- tential benefits.’’ Here, Green hits on the sore point for experts. “It is questionable, however, whether they have special com- petence to quantify benefits in a manner that can be regarded as authoritative in the formulation of public policy. No elite group of experts, no matter how broadly constituted, has the ability to make an objective and valid determination with re- spect to what benefits people want and what risk people are willing to assume in order to have these benefits.” Handler countered: “The principal dif- ference between my approach to the sub- ject of ‘safety’ and ‘risk’ and that of Professor Green is that I insist on quan- tification wherever possible whereas Pro- fessor Green appears more comfortable with ‘perception,’ ‘values,’ ‘order of safety,’ ‘judgment,’ etc. This is made ex- plicit, for example when [Professor Green] states that ‘safe is rarely defined in the real world in terms of a one-in-a- million chance of an accident, except, perhaps, as a standard for assessment chosen by experts.’ ’’ Handler then asks: “What other choice is there?” “. . .government regulation of techni- cal products and processes must rest on a rational and sufficient scientific base. Everyone has gained heightened aware- ness of the natural and man-made hazards to our environment. Governmental reg- ulations or programs intended to combat those hazards must, as a minimum, rest on detailed appraisal of the nature and magnitude of those risks, of the monetary and other costs of measures intended to reduce the severity of each risk, and of the nature and magnitude of the benefits involved in the process or product under consideration. If those in public office choose to flaunt such data, let that then bevlear. Green had a different conclusion: “Even though a scientist may not regard a safety determination as incorrect, he feels uneasy. . .when the decision is not rooted in an assessment of soundly pre- sented scientific fact. In this view, where the ultimate decision turns upon scientific questions, scientific fact should dictate the ultimate decision, or, at the very least, should define the factual predicates on the bases of which value conflicts are re- solved. To the lawyer and the politician, on the other hand, facts (including sci- entific facts) exist to be used selectively and with variable weight as tools for fram- ing positions in an adversary context and for making decisions of a practical, utili- tarian nature. To the scientist, truth, ob- jectivity, and accuracy are the ultimate desiderata; to the lawyer and the politi- cian, the ultimate goal of public policy decision-making is the optimum resolu- tion of conflict, and achieving this goal may require the symbolic acceptance of something as true which in fact is untrue or only partly true. This is not to say that truth is or should be cynically sacrificed at the altar of expediency; it is merely to recognize that decision-making in a dem- ocratic society almost always involves compromising, and temporizing, and therefore error, and that a democratic so- ciety can tolerate error in the expectation that ultimately truth will pre- vail. . . .Scientists are newcomers to the area of public policy decisionmak- ing. . .and [must] develop the capability of functioning within the institutional framework in a manner consonant with the basic principles of our forms of dem- ocratic society.”’ The Green-Handler debate has not been resolved, and technologists are still uncomfortable in public policy debates. The groups most influential in deter- mining public policy in the area of hazard management are technologists, man- agers, and concerned citizens. Here I will address the first. POLICY AND SCIENCE 161 Ill. Technologists I will describe weaknesses in the ap- proach many in this group now take, but in a short talk I can only sketch the prob- lems. In my concluding remarks, I will describe how scientists and engineers can better affect the policy process. I want to separate the general body of scientists, engineers and technologists into three subgroups: (1)those who really know science and technology, (2) those who know a lot but are not experts, and (3) those who op- erate high technology systems but do not really understand the technology they are using. A. The first group contains those who really do know the science or the tech- nology—the true experts. Unfortunately, many cannot communicate their knowl- edge. They are not able to reduce their discussion to a level that can be translated by the media or understood by lay people. In some cases, this lack of communication is not due to an inability, but rather to a belief that it is not worth their valuable time. Perhaps there are none such here tonight, but I have met scientists who be- lieve that writing for the general public is a waste of their time, that it is of little professional benefit, and that it also does little good. However, in the area of haz- ards and management of risks, it is critical for the experts to take time to commu- nicate well. Doing so reduces the possi- bility and, for complex issues, the high probability, that technical accuracy will be lost in the translation to lay language. In addition, there is a point made by Rob- ert Samuelson: “It is not an onerous re- quirement that when writing about risk assessment to make the assessment intel- ligible to the people who might be ex- posed to that risk.”’ I grant that many good scientists do try hard but have difficulties dealing effec- tively with the media. Many scientists cor- rectly are reluctant to say more than they know. Journalists have a tendency to treat this as equivocation, and so describe it to the public. Many lay people believe that when a scientist refuses to be definitive, it is equivocation, or, at least, indicates the scientist does not know much about the area. Many lay people believe that if you know something, you should be pos- itive about it. Unfortunately, what a sci- entist can be positive about is often not what the lay person is interested in. This is a difficulty that will face all technolo- gists who try to deal with the media. I encourage you to be patient with this problem, and to work with the media. I have found that most representatives of the media are willing to take the time to try to understand what you are describing, if it is obvious that you are making an effort to help them understand. My hypothesis is that when an expert is not communicating effectively, that usually is due to inability or unwillingness. There are other reasons that I will men- tion in connection with my second sub- group. B. The second sub-group of technol- ogists are those who are well-informed about the science and technology, but do not really have a complete understanding. They are not what we would call experts. Unfortunately, they often believe they are. These take a paternalistic or mater- nalistic attitude towards the public: ‘“‘Par- ent Knows Best.” This subgroup can be split into two fur- ther subgroups: Those believing the so- lution is education, and those believing the solution is trust. I recognize there are many experts who will also fall into these categories in the sense that they share the problems that I will now identify. (1) Those who believe the problem is education. Their attitude is that if only the public were educated, they would agree with us. Although I do not imply Chauncey Starr does not fully understand technology—he is an expert—many of Starr’s writings have this flavor. They im- portune the public to understand. Starr was one of the first to attempt to classify 162 JOHN F. AHEARNE what he would probably call true risks and to rank such true risks relative to each other. This approach has not been aban- doned, and was recently demonstrated in an article by Bernard Cohen in which he criticized what he sees as the irrational spending on cost per life saved in the United States. He wrote, “With any rea- sonable consideration. . .we are spending the equivalent of innumerable billions of dollars per life saved in our radioactive waste management programs.” He also estimated that “. . .[the] NRC program of regulatory racheting [has led to] . . .an average of at least $1.6 billion extra [for each nuclear plant], for a total cost of $100 billion in an effort to save. . .fifty lives.”’ He then commented, ‘“‘Why is this insanity taking place?. . .the problem is that public concern is driven by media coverage rather than by rational scientific analysis. The media have driven the pub- lic insane over the fear of radiation and of nuclear power accidents.’ The attempt to address risk manage- ment by ranking risks from different haz- ards has led to an attempt to define acceptable risk. I can sympathize with this attitude. For many years, I shared it. When I was on the Nuclear Regulatory Commission, I tried to get the National Academies to undertake a study of the comparative risks of coal and of nuclear power, believing that the development of an objective view by a credible organi- zation would significantly help the debate on the risks of nuclear power. However, I am now shifting to agree with the po- sition of some who have concluded, ‘‘The acceptable risk formulation has provided increasingly elaborate and precise an- swers to the wrong question.’’’ It is the wrong question because it is not linked to participation by and dialogue with the concerned public. A similar conclusion, that education is necessary to resolve risk controversies, is seen in a recent study examining whether the sources of environmental conflict can be explained by the characteristics and views of the participants in the conflict. The researchers polled a variety of people as to what are the most important causes of environmental conflict. Nearly three- quarters of those polled labeled “‘public misunderstanding”’ as a major source. But those polled did not agree on what the public did not understand. The respon- dees whose educational background was in “hard expertise [viewed] environmen- tal conflict as scientific rather than polit- ical, while those. . .individuals educated in the humanities or social sciences reject knowledge differentials as a major source of controversy. . . .Physical scientists, as expected, endorsed knowledge differen- tials, and reject value differences.’’® As a technologist, I must admit I do lean towards what may be a biased in- terpretation of those results. I read the results as showing that those who understand technology see the conflict being between those who understand technology and those who do not. How- ever, those who do not understand tech- nology, do not see understanding as important. Unfortunately, this is a weak- ness, I believe, in many non-technol- ogists, t.e., they Different model types are used for different loca- tions. Issues have been raised about which models are appropriate to use and whether or not the results are valid. Many of the issues regarding validity are over the assumptions used in the models. Some of the major assumptions that have been challenged include mobilization time, de- parture time, road capacity estimates, im- pacts of bottlenecks, number of vehicles used per household, impacts of accidents, route selection, and effectiveness of traffic control. A variety of models exist to estimate the time it takes to evacuate specific geographical areas. The models are definitely useful in evacuation plan- ning and likely provide better estimates than seat-of-the-pants guesses. How ac- curately they predict actual evacuation times is a valid issue.'* Assumptions in the models require closer scrutiny. There is a need to conduct empirical research to fine tune and validate the models to pro- vide more accurate and certain estimates of evacuation times. 5. Response Issues Physical Factors Constrain Evacuation Many people have questioned the abil- ity to evacuate large densely populated areas such as New York City, Long Island or other major urban areas near power plants in a timely or orderly fashion. Problems cited include lack of transpor- tation for large numbers of evacuees, in- adequate road capacity, traffic jams and the litany of issues associated with large- scale evacuations. Anecdotal information exists from case studies regarding the abil- ity to evacuate some densely populated areas but not extremely large popula- tions. Such evidence comes from studies of war time evacuations, events like the large-scale Mississuaga evacuation, or during Gulf and east coast hurri- canes.’°’°*-’° Additional knowledge has come from modeling studies but the re- sults have been questioned regarding their assumptions. It is unclear, therefore, how long it would take to evacuate large and densely populated cities or regions and further investigation is needed. The ability to relocate tourist and per- manent populations in areas with large seasonal populations has been raised at several nuclear power plant sites. Ques- tions have been raised regarding the or- ganizational ability to warn vacationers, transients’ knowledge of evacuation routes, sufficiency of shelters, behavior of transient evacuees, timing of evacuation, and traffic congestion. Near Seabrook as many as 40,000 people may occupy coastal beaches during peak tourist sea- son. The ability to evacuate tourist pop- ulations from areas subject to nuclear power plant accidents is a valid issue. Questions regarding knowledge of evac- uation routes, use of shelters, behavior of evacuees, timing of evacuation or the po- tential problems of traffic congestion should be addressed in emergency plans. There is not a great deal of research to support analysis of these issues. Anec- dotal experience provides some infor- mation, but even good case studies are lacking Behavioral research has not fo- cused on studying tourists as a population so behavioral knowledge is poor. Traffic modeling studies provide data on the length of time to evacuate some areas and are useful within the bounds of uncer- tainty governing those studies. Applica- tion of general knowledge does not suggest traffic simulation models are not feasible, but additional knowledge would improve planning to implement evacua- tion plans effectively. Critics of nuclear power evacuation planning have said that traffic accident rates will increase in an emergency evac- uation and this will cause excessive acci- dents that will tie-up traffic trying to leave. There is no research to date that suggests traffic accidents are more likely 218 JOHN H. SORENSEN AND BARBARA M. VOGT in an evacuation. Limited research and observation suggests there are lower ac- cident rates during evacuations.*4”° This may be due to increased driver vigilance and lower vehicle speeds. Public Behavior These issues relate to people respond- ing in a way that will jeopardize the ef- fectiveness of evacuation. Evacuation shadow is a point of litigation at nuclear power plant hearings. Based on the ex- perience at TMI, critics charge that peo- ple will evacuate from far larger areas than are officially advised.°!0:19.702133.86 Because plans do not exist to handle this withdrawal phenomenon, the contention is that evacuations will fail. The evacua- tion shadow exists by definition either spatially or demographically. A shadow is judged retrospectively and often with an arbitrary indicator of who or what area was ordered to evacuate.” As such, the definition of shadow ignores the social processes in disaster.'°!* Research has shown that perceived personal threat or risk at the time of the disaster is a central reason for persons evacuating.**® Re- search also shows that evacuation declines as the perception of threat decreases and distance from the threat increases. Even if one accepts the validity of the shadow concept, it can be concluded that it has been poorly studied. Behavioral studies have either failed to include a variety of risk areas in investigations or have inad- equately sampled the alleged areas of shadows. Panic is defined as acute fear of en- trapment coupled with attempted flight behavior.» Critics maintain that people will exhibit this type of response to an earthquake, nuclear power accident or nuclear crisis warning. This panic behav- ior will lead to increased traffic accidents and dysfunctional behavior. The condi- tions under which panic occurs are well understood. Panic rarely occurs in evac- uations because the conditions for panic are not likely to occur although not im- possible.***> One problem regarding the panic issue is that officials and the media often mislabel some behavior as panic and thus the myth is perpetuated. No further research on panic is needed unless a sit- uation does occur in which panic actually does take place. Spontaneous evacuation is commonly defined as leaving an area before the warning to evacuate is given as an Official order.® The claimed impact is increased congestion on roadways. Another pro- posed problem of spontaneous evacua- tion is that it makes zonal or staged evacuations (eg. evacuating a two mile radius, then the five mile and so forth) infeasible. As for shadow, this concept of spontaneous evacuation exists by defini- tion. The issuance of an official order is an arbitrary yardstick by which individual behavior is judged. Other types of infor- mation, including messages that an evac- uation is likely or that an unofficial evacuation is recommended, will cause some people to evacuate. The reasons why are more speculative. Anecdotal in- formation suggests that it is due to avoid- ing having to evacuate when officially ordered and erring on the side of caution. Aberrant behavior includes looting, anti-social aggressive acts, or other crim- inal acts. Some believe that this type of behavior increases during emergencies and would be more prevalent in the event of a nuclear power plant accident or nu- clear crisis situation. The research evi- dence against aberrant behavior of evacuees is fairly overwhelming to the contrary. Hostile behavior, particularly to emergency workers does not occur during evacuations. Looting occurs, but is ex- tremely rare. Crime rates are believed to decrease during evacuations and the de- mand for police services for non-evacu- ation or emergency functions decrease. Aberrant behavior is typically a myth that tends to be perpetuated by the media which covers isolated instances, misinter- prets behavior, or falsely associates an un- related incident with an emergency. Traffic time estimates and planning as- EMERGENCY PLANNING FOR NUCLEAR ACCIDENTS 219 sume that people will use certain optimum traffic routes. Critics content people will not use those routes and therefore the evacuation will not be effective. Further- more, congestion will occur on the routes that people will try to use or routes will be used that place evacuees at higher risk. No one has investigated the actual routes which people use when evacuating with any specific detail. Thus it remains a ma- jor issue with traffic time estimation models. The most reasonable assumption is that people will use routes they nor- mally use except if the routes are blocked or if evacuees are specifically directed by law enforcement personnel to use differ- ent routes. Another contention is that people won't obey officials managing an emer- gency. The issue centers around the belief that people will disregard traffic control guides or warning instructions while evac- uating. Critics also argue that people will disregard traffic signals or roadblocks. There is considerable amount of anec- dotal evidence which suggests that a very small percentage of the public will disobey official orders. Part of the problem in ad- dressing this issue is the definition of an official order which ranges from recom- mendations to evacuate to active attempts to get people to leave designated areas. In other words, this problem is related to the strength and perceived credibility of the official orders. Much is known about how to increase evacuation rates.” In high risk situations where door-to-door evacuations are ordered, 98 to 99 percent of the population under threat will likely evacuate. In less forceful situations the number evacuating can be substantially lower, but it would be improper in those situations to define that behavior as being disobedient. Another issue raised is that people will not go to designated host or reception areas. Evacuation planning at some sites assumes people will go where they are told. This issue raises the point that peo- ple will go to areas other than what the evacuation plans dictate. By implication this makes traffic time estimates and re- source availability analyses inaccurate. In most evacuations people are usually not told to go to designated areas. (This is different from going to assigned shelters. ) When instructions are absent, research has shown the destinations people choose when evacuating. Research does not exist to infer how many people would go to a designated host area if instructed to do so by acredible source given adequate warn- ing. In part, the number of evacuees going to assigned shelters would be determined by the information provided and the de- gree to which transportation movements are controlled. Emergency Worker Behavior This set of issues contend that emer- gency personnel will engage in behaviors counter to evacuation goals.*°’? Role abandonment is conceptualized as emer- gency workers leaving their jobs to per- form other roles. The main issue is over how many workers will engage in this be- havior. A secondary issue is whether this will constrain an evacuation. Role aban- donment has also been a controversial is- sue for other hazards. Research suggests that total role abandonment has not been prevalent in disasters and certainly has not been dysfunctional in organizational behavior.*” Some people have hypothe- sized that role abandonment would be greater and likely problematic in a nuclear power plant accident or during a nuclear war threat. This remains somewhat spec- ulative. Research suggests that in the for- mer case there may be an increased potential for conflict and role strain but emergency functions would not be threat- ened. In the latter case the issue is highly uncertain. Additional research on role conflict would be confirmatory but is not of high priority. Larger Issues 1. TMI And Emergency Planning The accident at TMI continues to be the dominant reference for emergency 220 JOHN H. SORENSEN AND BARBARA M. VOGT planning issues around nuclear power plants.’-”4’88! Drastic changes were im- plemented on the basis of that experience. There is little doubt that if an accident similar to TMI does occur in the future, the response will be greatly improved. Accidents, by definition, include a host of unanticipated events. There is no guar- antee that research to date has identified the next accident sequence or scenario. Witness the Chernobyl accident. The U.S. response was that it cannot happen here. This is probably correct, although not provable. A more important issue is that does this country have its Chernobyl class accidents. The answer is likely yes. The changes in emergency planning due to TMI are a prime example of crisis management. A crisis occurs and changes are made which will improve response given that set of historical conditions. Yet science is not that deterministic. Rarely do scientists in either the physical and so- cial fields make conclusions based on one data point. Yet our current plans are based on that single point. The accident at Ginna Nuclear Power Station in New York involving a steam tube rupture provides a second data point. This accident involved a release of radiation, led to activation of the emer- gency warning system and caused a pre- cautionary early dismissal of area schools. People did not spontaneously evacuate. There was no shadow, panic, aberrant be- havior, role abandonment, etc. Several interpretations exist. First is that the ac- cident demonstrated that changes in emergency planning solved the problems that occurred at TMI. Better, more cer- tain, and credible information was given to the public. Second is that the Ginna utility plays a much different role in the local community than the one at TMI and it’s integration into the structure of the community led to a good community re- sponse. A third assessment was that a snowfall on the day of the accident acted as a constraint against spontaneous evac- uation. In reality it was a combination of factors that help explain this different pat- tern of response. The emergency planning changes that occurred since TMI cannot take full credit for the improved manage- ment nor should the lack of spontaneous evacuation be attributed to the fact it was snowing. As a competing hypothesis the snow explanation, like snow, does not hold much water. The critical point is that the dramatic changes made in planning requirements because of TMI do not insure good re- sponses to a future event. Elsewhere we have argued that the plans are far too complex, bureaucratic and rigid to permit flexibility in managing emergencies. At one reactor site alone we have identified over one hundred separate plans for the utility, government and private facilities. The sheer number makes consistency among the plans unlikely. Even if the plans were consistent, the problems of continued coordination during planning and in an actual emergency are immense. Yet having an adaptive and flexible or- ganization is a key factor in having effec- tive emergency management response. The current plans do not promote flexi- bility. If a future accident does not fall within the confines of the plans, the abil- ity to adapt to problems posed by an ac- cident may be constrained by the structured plans. If the Chernobyl acci- dent had occurred in the U.S., current plans would have been of little utility in guiding response. The extent to which the planning process had facilitated inter-or- ganizational coordination among the ap- propriate people and the extent to which organizations could adapt plans to the dif- fering situation would be critical factors in determining the effectiveness of re- sponse. 2. Use of Behavioral Intent Studies One of the ways suggested to resolve these contentions involves the use of be- havioral intent studies for future events. For many of the contentions the burden EMERGENCY PLANNING FOR NUCLEAR ACCIDENTS 221 of proof involves the use of behavioral intent studies. However, most behavioral intent studies rest on the results of survey research. For example, several studies have polled emergency workers and asked them about role abandonment.” In a study of school teachers at the Califor- nia Diablo Canyon nuclear power plant teachers were asked: “‘Assuming the Dia- blo Canyon Nuclear Power Plant is li- censed and begins to operate, we are interested in knowing what you think you would do if there was an accident at the plant on a school day during normal op- erating hours. Everyone living within ten miles were advised to evacuate. Teachers were expected to help evacuate school children. What do you think you would do first? 1. Help with the evacuation of school children outside of the designated dan- ger zone; or | 2. Go to make sure family members were safe; or 3. Leave the evacuation zone to make sure you were in a Safe place; or 4. Do something else.” The results of the survey, at face value, indicate that only two-thirds of the teach- ers would perform their specified emer- gency roles. Several specific problems exist with this literal interpretation of the research. First, the researcher failed to provide a realistic set of responses to the teachers that encompassed all possible be- haviors and categories that were mutually exclusive. Adding a catch-all category does not alleviate this problem. No at- tempt was made to provide a response category that includes checking on the safety of family while performing an emergency role. Secondly, the wording of the responses were unclear. One may well interpret the first option as evacuating children who are located in schools out- side of the 10 mile radius. Certainly a teacher inside the ten mile zone would not choose this option. Third, the question forces the assumption that all teachers have emergency roles that last the dura- tion of an evacuation. This is likely to be unrealistic. Thus a teacher who does not have a specified role could legitimately answer with responses two or three. Nevertheless, a response of 61% of teach- ers to perform emergency roles for the duration of the emergency is likely to be more than sufficient to effectively evac- uate the schools. Even this interpretation of the results were taken at face value, it is unwise to believe that this estimate is an accurate predictor of actual behavior. This research is problematic for several other general reasons. First, polls are premised on the notion that statements about current attitudes or thoughts about future behavior can be used to predict actual future behavior. This assumption is wrong when that behavior concerns a future emergency situation. Most social scientists would say that people’s attitudes and their speculation about future behav- ior are imperfect predictors of behavior except when that behavior is frequent and repetitious. Asking a person to make a ‘cold’ judgement about how he or she might hypothetically react in a complex future situation for which they have had no previous experience, and giving him or her a few seconds to answer, is not a good predictor of future behavior. Be- havior in an emergency is a social process and is situationally determined. In that process notions about appropriate ways to act emerge based on the information being disseminated at the time. The factors that influence human re- sponse to emergencies are relatively well- known and accepted as valid by most sci- entists in this area. These factors can be addressed in an emergency plan to help achieve the desired response when the plan is put into operation. An attitude or opinion profile or a catalogue of behav- ioral intentions would not appreciably help address these factors in planning or upgrade good organizational or public re- sponse when the plan is activated. In fact, a compilation of behavior intentions— which is certain to be wrong when com- 222 pared to actual emergency behavior— could hurt planning efforts because plans would be based on incorrect assumptions about behavior. Consequently, research which asks teachers or school bus drivers what they would do in an emergency is not a good way of predicting nor understanding role conflict issues. Research based on these methods which concludes people will abandon their roles is largely invalid and should not be the basis for developing emergency plans. The basis for plans must be developed on existing knowledge, not on speculative or inaccurate assumptions. Conclusions and Recommendations In conclusion we make three recom- mendations for changes in policies re- garding emergency planning for nuclear facilities. 1. Revise radiological emergency planning frameworks in a manner which promotes more flexibility in response procedures and which is more responsive to local factors such as unique topography and population distributions. This change would re-orient planning guidelines to encompass a broader range of accidents than current plans describe. Additionally, this concept involves chang- ing the structure of planning regulations to encourage a more adaptive and flexible approach by emergency organizations. While flexibility can be considered as a trade-off with the formalization of pro- cedures, the current planning philosophy only emphasizes a strict implementation of narrowly-defined tasks. Therefore, the policies, and hence planning regulations, need to encourage a different approach to emergency planning. The regulations should be changed to encourage adaptiv- ity to local situations, while at the same time giving guidance on how to manage the hazard in question. The greatest con- JOHN H. SORENSEN AND BARBARA M. VOGT sequences of not adopting this approach is that organizations will not be effective in an anomalous situation and that local Organizations will concentrate plans around the wrong accident scenarios. 2. Develop policy positions on various issues including the validity of various contentions and the conditions under which the contention are or are not valid. It is the basic responsibility of the NRC to license nuclear power plants. As part of that procedure the NRC should de- velop consistent positions on common contentions. At present, the NRC at- tempts to avoid committing to a position on many contentions. This stance allows the process of licensing to be judged on the basis of a comparison of the ideologies of experts representing the intervenors and those of the experts representing the utility. A set of guidelines based on sci- entific evidence and previous Atomic Safety Licensing Board (ASLB) rulings should be established for all major con- tentions. This should not exclude litiga- tion over any issue, but make the resolution of these contentions more con- sistent. In time this should decrease the time spent in resolving generic issues. 3. Give local and state governments more legal responsibility for developing emergency plans for nuclear power plants while placing the burden of proof on all. Currently local and state government can hold hostage utilities seeking a license for nuclear plant. The local decision about nuclear power should be made at the sit- ing stage. Subsequent actions to negate a poor siting decision should not centrally involve the procedure of emergency plan- ning; albeit the contents or effectiveness should be addressed. If analysis are done which conclusively demonstrate that emergency plans cannot mitigate accident consequences, then a siting decision EMERGENCY PLANNING FOR should be reconsidered. If analyses are done that suggest improvements in the emergency plan can reduce risk or con- sequences, those changes should be adopted. Emergency planning has be- come a means of fighting other issues. This is a problem in that it detracts from the goals of planning. We hope that such issues are refocused and the legitimate as- pects of emergency planning are brought forward instead. 10. jh i i References Cited . Aldrich, D., D. Alpert, J. Sprung and R. Blond. 1982. Recent developments in reactor accident offsite consequence modelling, Nuc. Safety 23: 643-652. . Anderson, W. 1969. 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Bord Associate Professor of Sociology Department of Sociology The Pennsylvania State University University Park, PA 16802 ABSTRACT It has become virtually impossible to site risky waste disposal facilities or waste treatment facilities, especially those handling radioactive wastes. A growing army of experts has joined the fray with suggestions for solving the impasse. Three of the more popular proposed solutions are: improved risk communication; improved disposal or treatment technology; and the provision of incentives and assurances to affected communities. This paper argues that these proposed solutions ignore fundamental realities. The proposed solutions are juxtaposed with the realities facing those responsible for siting. These include: the popularization and democratization of risk; a host of problems associated with risk information and communication; problems with improved technology including its cost, the inability to create anything foolproof, and the issue of adequate management; the inability of incentives to address health and safety questions and the legal and practical limits to assurances. In addition, the fundamental political dimensions of the problem are addressed and future prospects explored. Introduction Effective opposition to risky facilities has assumed the dimensions of a signifi- cant social problem. The growing famil- larity of the neologisms ‘“‘LULU”’ (Locally Undesireable Land Use) and “NIMBY” (Not In My Back Yard) reflect the reality of effective pubic opposition to many types of unwanted facilities. Fa- cilities bearing the burden of the label “radioactive” appear to generate even more intense negative emotions and have the distinction of being targeted by professional opposition groups.! This pa- 226 per constitutes an evaluation of the prob- lems facing those responsible for siting hazardous facilities, with an emphasis on radioactive waste treatment and disposal facilities, and a brief assessment of cur- rently proposed solutions. The evolution of the siting problem has witnessed the co-evolution of a number of proposed solutions. Experts of many persuasions have leaped into the fray in the hope of providing techniques which will result in successful siting. This paper examines each of these proposed solu- tions in light of the network of problems which presently characterize radioactive REACTOR AND NUCLEAR WASTE SITING 227 facility siting. It concludes with a discus- sion of likely paths that future siting at- tempts may take. Siting Risky Facilities: The Search For Solutions Before discussing specific siting diffi- culties it is necessary to set the general problem within its cultural context. There exists a matrix of common understand- ings, conditioned by our unique liberal democracy, which shapes the nature of the problem and the search for solutions. It is this culture which makes it highly unlikely that solutions which are success- ful in other countries can be transferred here with similar results. Public participation is part of our Jef- fersonian heritage. The American Rev- olution, the Civil War, and the Westward expansion have institutionalized a general lack of respect for constituted authority and that tendency persists. It is commonly understood that the citizen should not be timid in fighting ‘“‘the establishment.” In the decade of the 1960’s, public partici- pation in decisions involving the siting of risky facilities was mandated by law. These legal innovations have made it pos- sible for citizens, even small groups and individuals, to delay or stop the imple- mentation of many risky technologies. From this perspective opposition should be expected because the socio-political system encourages and reinforces it. Fur- thermore, since the nuclear industry, both private and public, depends on capital in- tensive technology which is managed by large organizations and regulated by the Federal government, it is easy to construe the situation as one of the powerless in- dividual and/or community against the mobilized forces of corporate wealth and political power. An understanding of this cultural con- text highlights the limitations of many at- tempts at solution presently being pursued. A problem which is inherently political in nature tends to be treated pri- marily as a problem in attitude change.’ A basic argument in this paper is that ap- proaches emphasizing attitude change have little chance of success because they fail to address to real issues. Other ap- proaches have a higher probability of suc- cess but the magnitude of that probability is Open to considerable debate. Various experts have promoted basi- cally three classes of solutions to the siting problem: 1. improved risk communication; 2. improved disposal or treatment tech- nology; 3. and, provision of the opportunity to negotiate incentives and assurances to affected communities. Each of these proposed solutions, and their limitations, will be discussed in turn. Improved Risk Communication as a Solution Those favoring improved risk commun- ication as a solution to public intran- sigence view the problem as one of correcting errors in perception and judg- ment. The assumption appears to be that if the public only understood the problem as the experts, at least those experts in- volved in the siting process, understand it then fear and resistence would diminish. An excellent example of faith in improved risk communication is provided by EPA administrator, William Ruckelshaus in a speech delivered before the National Academy of Sciences at the beginning of his second term. Quoting Jefferson, Ruckelshaus stated: “Tf we think (the public) not enlight- ened enough to exercise their control with a wholesome discretion, the rem- edy is not to take it from them, but to inform their discretion.’ Unfortunately, less than two years later Ruckelshaus was having second thoughts about the sentiments expressed in that quotation. 228 RICHARD J. BORD Two issues are viewed as keys to un- derstanding the limitations of improved risk communication: 1. the popularization and democratiza- tion of risk; 2. and, problems associated with the risk information itself. While there are excellent review articles detailing problems in risk communica- tion,*° they do not generally address the first issue to be discussed. The Popularization and Democratization of Risk Concern with risk is certainly not an invention of modern technological soci- eties. It can be argued that the major function of religion and law has been risk control or avoidance. All religions include rituals through which spirits can be in- voked to protect person, family, and property. Law focuses on the social con- trol of risk and risky individuals and what is considered as the equitable distribution of risk in a society. However, concern with risk in modern, democratic society has become fine- tuned. There are now hosts of profes- sionals devoted to discovering new risks, more accurately estimating known risks, better communicating risks, and more ad- equately controlling risks. Risk has be- come big business. In fact, risk discovery, estimation, communication, and control is fast becoming a somewhat independent academic discipline embracing natural and social-behavioral scientists of many persuasions and even publishing its own professional journals. While this growth of the risk establish- ment has much to commend it, there may be unexpected consequences which have not been adequately addressed. Consider that it is now virtually impossible to es- cape news of the latest “significant” risk on an almost daily basis. Newspapers, tel- evision news and advertising, government pronouncements, and popular books and magazines provide constant reminders that life is one constant flirtation with dis- aster. Questions about fiber, fat, alcohol, sugar, and caffeine in the diet, the relative safety of flying congested airways with a suspect population of air traffic control- lers, the possibility of terrorism abroad, the need to get more (or less) exercise, the threat of the AIDS virus, the latest crime statistics and so on ad infinitum cre- ate a climate in which attention to risk may have become almost pathological. While the mental and behavioral out- comes of constant attention to risk are debatable, there has been virtually no re- search on that specific topic, there is little reason to believe that lowered anxiety or a willingness to assume greater health risks are among them. Another historical dimension of risk is that it is seldom distributed equitably. The poor generally bear greater burdens of risk than do the rich. Modern studies demonstrating that the poor breath fouler air, experience more occupational haz- ards, and tend to live nearer to environ- mentally risky facilities should come as little surprise.° The more affluent have always had greater opportunity to relo- cate to areas of less risk, to purchase more adequate diets, and to assume safer jobs. However, contemporary “. . . features of environmental risk seem so ubiquitous ... that even the wealthy and the pow- erful are becoming anxious.”’’ Risk experts have made it clear that environmental pollutants in the air, soil, water, and food chain are no respectors of social status. Nor is it possible for most people to geographically relocate to es- cape the more common environmental hazards. Modern surverys of environ- mental attitudes, especially attitudes to- ward risky facilities, tend to demonstrate no consistent pattern for social class vari- ables such as education, occupation, and income.® One resonable interpretation of those results is that everyone is frightened or anxious to some degree. The only con- sistently discriminating demographic vari- able is sex: women demonstrate higher REACTOR AND NUCLEAR WASTE SITING 229 levels of concern than do men and, at least in my data on LLRW siting, proclaim themselves as unequivocal ‘““NIMBY’s”’ more often than do men.’ In this context it is worth noting that emergent local op- position is often lead by middle to upper- middle class women.” Sensitivity to a wide range of risk has been popularized and democratized. The risk enterprise continues to document possible health hazards and the various information media helps keep the general public aware of the latest health threat fad. The ubiquitousness of modern pol- lutants insures that everyone shares in exposure to some degree. Heightened anxiety and avoidance is a reasonable re- sponse. Paradoxically, while we may be the healthiest and long-lived peoples to ever inhabit the planet we may also be the most concerned with issues of health and safety. It makes little sense to label this a phobia or some other mental health ab- erration. There is a dense network of or- ganizations whose major goals include keeping the public concerned about their health. That is how one garners contri- butions to health organizations, how nu- merous magazines and newsletters are promoted, how exercise equipment and health foods are sold, how careers in var- ious health organizations are maintained, and how a plethora of health and beauty aids are marketed. Promoting anxiety about health is a very profitable enter- prise. Problems Associated with Risk Information Much has been written about the ra- tionality or irrationality of the public’s re- sponse to risk information, especially risk information dealing with radiation haz- ards.''!* The more technically minded tend to see the problem as one of properly educating the masses so that decisions are made which allow the utilization and fur- ther development of the technology. However, judgments of rationality-irra- tionality are clearly value based. The more pertinent question is exactly how do people process risk information and what is the probability that their judgments can be modified. Three issues are crucial: 1. how is risk information processed; 2. what information is available for pro- cessing; 3. and, who provides the information with what effect. Problems in Risk Information Processing Three interrelated aspects of risk in- formation processing are central to this discussion: 1. the importance of attention selectivity; 2. the perceived voluntariness of the risk; 3. and, the issue of generalizing risks. ‘People’s perceptions of risk .. . are influenced by the memorability of past events and the imaginability of future events. As a result, any factor that makes a hazard unusually memorable or imagi- nable, such as a recent disaster, heavy media coverage, or a vivid film, could se- riously distort perception of risk.’’’ Cog- nitive pyschologists agree that attention selectivity is a key issue in information processing. The more vivid or dramatic the event the more likely it will garner attention. That is why advertisers employ unusual scenes, loud and rapid sounds, brilliant colors, sex, and other attention- getting devices. It is worth noting that in- formation about a plane crash which kills 200 people is attention getting, informa- tion about the hundreds of planes which fly daily across the country is not. Related to the issue of attention selec- tivity is the fact that people seldom ac- curately interpret information based on probabiliites.'* While this tendency is sometimes used as a example of irration- ality it may be more pertinent to ask why anyone, except a scientist doing imper- sonal analysis, should pay any attention 230 RICHARD J. BORD to probabilities. From an attention getting perspective, news that something in drinking water increases the incidence of annual cancer by one in ten-thousand is simply news that the cancer rate has in- creased. The “‘red-flag”’ is more cancers.” The one in ten-thousand is personally ir- relevant. After all, the individual either gets cancer or does not get cancer, he or she cannot experience a probability. The perceived voluntariness of the as- sumed risk is close behind attention se- lectivity in importance. People routinely assume all sorts of risks on a voluntary basis. They do so because the risk taking provides benefits such as easier living, personal satisfaction, ego-enhancement, or simple physical pleasure. Comparison of this type of risk taking with living next to waste disposal or power generating fa- cility is futile. They are not comparable within any reasoned frame of reference. However, the involuntariness per se is not the critical issue. Involuntariness arouses public ire when it is imposed by some per- son or agency who Is perceived as occu- pying a position of power.'® Recall the discussion of our historically based cul- tural hostility toward authority viewed as arbitrary. In addition, there are enough examples of corporate, industrial, and governmental insensitivity which results in significant negative outcomes to justify suspicion and hostility toward those who would impose unwanted risks. Finally, the current state of risk esti- mation is greatly deficient in one aspect of central concern to many citizens, the ability to estimate the cumulative effect of exposure to many environmental haz- ards. The person who is informed about the increased risk posed by a particular substance quite logically wonders about how it interacts with all the other hazards being ingested, inhaled, or absorbed. This is especially the case in our highly charged risk information society. While the EPA is presently considering a “‘total human exposure” methodology, useful informa- tion will not be forthcoming soon.!’ Fur- thermore, it should not be assumed that once this information is made available that it will diminish public anxiety. The accuracy of the information can always be challenged, its sources impugned, or it can result in increased fear and a more militant avoidance response, a frequent result of risk information campaigns. A typical reaction to such news is, ““My God I didn’t know thing were so bad.” The Availability of Information The importance of selective attention has been established. It now becomes im- portant to explore what kinds of risk in- formation is readily available to the general public. In my own research on public attitudes toward a proposed LLRW volume reduction facility and a LLRW disposal facility'®” several events are frequently mentioned: Love Canal, Three Mile Island, nuclear bomb testing, and the movies ‘‘Silkwood”’ and “China Syndrome.”’ These examples are used by people to illustrate the perceived serious- ness of the risk, the callousness of gov- ernment and industry, and the reason why no governmental regulator or facility manager can be trusted. In other words, these events appear to be part of a com- mon culture through which related pieces of information are filtered. If indeed these are elements of a coherent cognitive sys- tem they may have the same effect as any deeply held belief system: they are vir- tually impossible to change. Exploring my own ““memory dump” of fairly recent related bits of information produces the following: the infamous gar- bage barge looking for a home; an article in an outdoor magazine advising that if you must hunt waterfowl make sure you only eat one a month because of PCB and EDB contamination; a similar advisory on fish from the Great Lakes and bottom feeders from the Atlantic; a local advisory on fish from my favorite fishing lake; the Bhopal tragedy; Chernobyl; the death of porpoises off the east coast being tied to possible offshore chemical dumps; and the recent discovery that our local water REACTOR AND NUCLEAR WASTE SITING 231 supplies have unacceptably high levels of PEC's: I am sure the reader can supply their own shopping list of environmental hor- rors which would vary in specifics but not in general impact. Whether the items in any particular shopping list are truly en- vironmental disasters is not the issue. The fact is they are dramatic, frightening, and frequent. That is, they embody all the cri- teria for attention getting stimuli and they do remain in memory. Even if people were regularly exposed to more objective information, which they are not, it could not hope to compete with that informa- tion which is already stored and which comprises daily risk information fare. However, perhaps the single most vex- ing issue facing those who favor more ob- jective risk information as a palliative to public opposition is the lack of certitude which plagues risk estimates. For exam- ple, the problems with low dosage radio- active materials is that they carry some degree of risk but the magnitude of that risk is largely conjecture and open to chal- lenge: “There appears little consensus among scientists over the health effects of ex- posure to low-level radiation. In an ex- tensive study done by the Committee on the Biological Effects of Ionizing Radiation issued in 1980, the authors reported that health risk estimates are based on incomplete data and involve a large degree of uncertainty, especially in the low-dose region.’’”’ The kind of uncertainty permits British anti-nuclear activist Dr. Alice Stewart to predict a “hidden epidemic” as a result of the Chernobyl accident.*' Hidden ep- idemics tend to be more frightening than those whose effects are easily observable. Uncertain information invites challenge and encourages rejection among those who are not experts in the field. It seems a reasonable response to assume that if the experts cannot agree why should any- one tolerate it. Finally, the argument has been effec- tively made that the selection of risks to evaluate, the methodologies employed in determining risk, and the selection of data all embody values and baises. As in most important policy arenas, it is extremely difficult to separate fact from value in the great risk debate. The issue of a possible underlying ideology is another barrier to public acceptance of information pro- vided by experts they do not trust. The above discussion naturally leads to consideration of who does, and does not, provide that risk information which elicits attention. Who Provides the Risk Information © Although there is a relative paucity of research on the subject there is general consensus that the media sets the agenda for risk perception” and that media pro- vided risk information is highly dis- torted.* One of the obvious reasons for this bias is that attention-getting news sells papers. News of human tragedies, failed technologies or management sys- tems, or of a powerless public being bilked by some powerful industrial or government giant is “juicy” fare. This phenomenon helps explain the public’s keen interest in a policitician’s sex life and relative indifference to his views on im- portant policy issues. However, the issue of media bias is more complicated than simple over-atten- tion to the dramatic. Rothman and Lich- ter provide provacative data indicating that journalists who write on scientific matters are: (a) more likely to attend to the writings and pubic statements of an- tinuclear scientists; and, (b) are strongly influenced by their political beliefs. That is, ‘‘. .. key science journalists are far more skeptical of nuclear energy than are scientists” (p 51) and therefore more at- tuned to the pronouncements of anti-nu- clear activists such as those affiliated with the Union of Concerned Scientists, Ralph Nader, and Dr. Ernest Sternglass. Also, the more liberal the journalist, both sci- ence journalists and others, the more anti- nuclear: ‘““The best predictor of opposi- 232 RICHARD J. BORD tion to nuclear energy is the belief that American society is unjust” (p 51).”° It is likely that this bias generalizes to risks other than nuclear energy. It is true that many environmental problems are tied to the operation of large, for-profit organi- zations and are regulated by government bureaucracies which are viewed as being allied to the for-profit industries. It is easy for a journalist, or anyone, concerned with social justice to view this as another case of the helpless individual against cor- porate and government giants. Appar- ently that is the definition promoted by the media and accepted by much of the general public. The “‘us little people ver- sus them powerful, insensitive bureau- crats’’ theme recurred frequently as unsolicited comments on my LLRW sur- vey. This also explains how nuclear tech- nology evolved into a liberal-conservative issue. While the media, with its biases, is the most prevelant source of risk information there has been an interesting develop- ment in the evolution of nuclear experts who offer their services on the informa- tion market. Risk information experts tra- ditionally are affiliated with government, industry, and educational bureaucracies. Within the past several months, however, anti-nuclear activist Marvin Resnikoff has begun advertising as a “second opinion” resource to state and compact officials. His “Radioactive Waster Management Associates”” provides an attractive and convincing brochure which touts the professional qualifications of he and his staff. In addition, Resnikoff’s former or- ganization, the ‘“‘Radioactive Waste Cam- paign,’’ is under new leadership and is advertising ““Living Without Landfills” to state officials, radwaste generators, and other interested parties. “Living Without Landfills” provides state or compact of- ficials with detailed information on how to calculate “. . .total radioactivity and radioactive hazard over the lifetime of waste generated in a State or Compact region.” This professionalization and im- proved marketing strategy of anti-nuclear activists should increase their influence with the general public and, perhaps, with state and local officials. In the LLRW sur- vey mentioned previously, respondents were asked who they trusted as sources of information on LLRW. Anti-nuclear activists scored very low in terms of public confidence while any source which had the term “expert” appended to it elicited high votes of confidence. Finally, information regarding risky technologies is not provided solely by for- mal sources such as the media or profes- sionalized interest groups. Information, and its meaning, is usually filtered and negotiated through informal networks of co-workers, friends, and relatives. Little is presently known about the role of in- formal information sources on the for- mation of attitudes toward risky facilities. It does appear that negative attitudes are relatively easy to mobilize. Siting cam- paigns that start on a positive note fre- quently turn sour once the information is more widely distributed in the commu- nity. The source of this opposition prob- ably lies in informal opinion leaders and the negotiation of meaning in the context of small, informal groups. Improved Disposal and/or Treatment Technology as a Solution Improved technology proponents tend to originate from two quite disparate sources: environmental activists and waste technology developers. Environ- mental activists, particularly the Sierra Club and East Coast anti-nuclear groups such as the Radioactive Waste Campaign, have publically disparaged landfill dis- posal since the passage of the 1980 LLRW Policy Act. Their preference is for high- integrity, above-ground storage which would allow constant monitoring and the possibility of material removal should problems develop. A number of com- pacts, recognizing the poor reputation of landfills, have officially opted for engi- neered containment. Waste technology companies have recognized that the de- REACTOR AND NUCLEAR WASTE SITING velopment of high-integrity, easily mon- itored, containment, along with volume reduction technology, can have substan- tial payoff and have been developing competing versions in an effort to capture a viable market share. While this solution to the problem of public intransigence has substantial sup- port among diverse constituencies it is still not known whether other sectors of the public, particularly the communities tar- geted to host risky sites, can be convinced of its relative merits. Above-ground stor- age, in particular, has its detractors in terms of costs, overall safety, and worker protection. In my Pennsylvania survey, a substantial majority of the general public did not view above-ground storage as sig- nificantly safer than traditional landfills. They did clearly prefer below-ground dis- posal with engineered barriers. The prob- lem is that environmental activists can, and will, challenge any below-ground fa- cility on the basis that it is technically im- possible to guarantee zero migration of radionuclides into the soil and eventually the water. This is especially likely in re- gions of high rain and snowfall. Given previous arguments, it can be expected that the local news media will focus on controversy of this sort and this may fur- ther erode public confidence in the via- bility of a technical fix. Furthermore, attempts at technological fixes will be very expensive. It appears that many decision-makers have decided that the costs can be passed on to the consumer with relatively little effect.* However, this may be a dangerous atti- tude in the sense that once the public is made aware that they are again being asked to pick up the tab for for a tech- nology that was once touted as producing electricity at a rate “too cheap to mea- sure’’, their opposition may escalate. While decision makers may not think the per capita cost is excessive, the public will have to be convinced. Finally, there is a growing recognition that beyond the issue of the scientific and technical integrity of a given technology 233 is the question of management: can it be operated safely on a routine basis over long periods of time. The Bhopal, India disaster provoked the following com- ment: ‘What truly grips us in these accounts is not so much the numbers as the spec- tacle of suddenly vanishing compe- tence, of men utterly routed by tech- nology, of fail-safe systems failing with a logic as inexorable as it once was. . . indeed, right up until that very moment- unforseeable. And the spectacle haunts us because it seems to carry allegor- ical import, like the whispering omen of a hovering future.’’”’ News of mismanaged high tech is in- creasingly common. For example, it is well known that managemet decisions were somewhat responible for the space shuttle disaster, TMI, Chernobyl, and cases of failed waste sites. Male respond- ents especially, in my LLRW survey and a survey dealing with a volume-reduction facility, spontaneously mentioned the high probability of human error as a rea- son for their opposition to siting. They view Murphy’s Laws as alive and well in high tech industries. Negotiation for Incentives and Assurances as a Solution First, it must be made clear that incen- tives and assurances are distinct entities and vary considerably in their degree of attractiveness to various communities and people within communities. Incentives, or concrete material rewards, are gener- ally viewed in the context of restoring eq- uity. It is reasoned that a risky facility is a common good distributing benefits widely but concentrating costs locally. The key to public cooperation is viewed as some sort of concession which raises the reward value of the facility and thus makes the costs less onerous. Material re- wards appeal to pecuniary motives, are more attractive to financially strapped communities, and are subject to being la- beled as crass payoffs by the opposition. 234 RICHARD J. BORD They do not address issues of fear and distrust. Assurances, on the other hand, are typ- ically in the form of options which provide the community with some means to pro- tect itself and to check on the data pro- vided by experts and site operators. Assurances provide some measure of power sharing and do directly deal with issues of fear and distrust. Their major shortcoming is that whatever assurances are offered can always be defined as in- sufficient by those dedicated to stopping siting. Again, in my 1985 survey on Pennsyl- vanians’ attitudes toward various policy issues connected with LLRW siting, re- spondents were asked to evaluate mate- rial incentives and assurances. The incentives included guaranteed property values, local tax relief, a surcharge on the waste to be returned to the community, and local hiring and buying agreements by the site operator. The assurances in- cluded community control over who op- erates the site, the provision of resources to hire independent experts as checks on industry and government experts, the provision of resources to train locals to monitor the site and local power to shut down the site should malfunctions occur. Each of these options were presented in two formats. First, the respondent was asked how important they thought it was to provide a community with the partic- ular option. Then, they were asked if they thought that the provision of that option would encourage community coopera- tion. In addition to the general public, these same questions were put to a small sample (38) of state level heads of envi- ronmental, civic, and public health asso- ciations. The results of these surveys indicated that the public thought that affected com- munities should receive both incentives and assurances but a solid majority ex- pressed little confidence in material in- centives, except guaranteed property values, as means to promote cooperation. Large majorities (80% and above) chose the options providing control to the com- munity. This is simply a reaffirmation of the primacy of health and safety concerns. However, in responding to the same items, major decision makers demon- strated the opposite tendency. They tend to overchoose the material incentive op- tions. During interviews they often ex- pressed the opinion that “money talks.” The exception to this generalization was those leaders of environmental activist or- ganizations. Their responses paralleled those of the general public. That is, op- tions granting local control were viewed as much more crucial than simple material incentives. This gap in perception be- tween the public and decision makers highlights the different basis from which each is making their judgments. For the public, personal protection is paramount. For most decision makers, siting is par- amount. Since incentives are easier to ma- nipulate than shared power options they are likely to be favored by decision mak- ers. If shared power is to be taken seriously then what form can it assume given the existing legal and institutional infrastruc- ture? Providing grants to communities to hire independent experts and to pursue site monitoring are manageable options and are presently being written into siting legislation in various states. No means presently exists to allow communities to control site operations. While grants to hire independent experts and to monitor the site are welcome assurances they may not be enough. For example, the com- munity could hire independent experts who they know will challenge government and industry data. A related issue is who does the com- munity trust to represent them to the sit- ing agency. Communities are never homogeneous on issues such as this. Some members will favor siting, some will be on the fence, and many will be opposed. To be viewed as a legitimate exercise, the negotiation process will have to include community members who enjoy trust and credibility. In the same study referenced REACTOR AND NUCLEAR WASTE SITING 235 above, respondents were asked who they trusted to represent the community. Sur- prisingly, local and county officials elic- ited very low votes of confidence. Higher confidence was expresed in locals elected to a committee, referenda, or general town meetings. Of course each of these options could be used to effectively stifle the siting process. Somewhat complex incentive and as- surance packages are currently part of all serious attempts to site nuclear facilities. The Texas low-level radioactive waste campaign is a good example.” Their de- gree of success will have to be evaluated post hoc. Note that most of the issues discussed above focus on changing individuals. Lit- tle systematic attention has been given to crucial political aspects characterizing this problem. The reason for this relative lack of attention may lie in the fact that so- lutions aimed at individuals are consistent with our democratic beliefs and our faith that reasoning will win out. Attention to political issues are certain to mobilize deeply held passions. Political Dimensions of the Siting Problem Three issues will be discussed in this section: 1. the decline of the notion of ““common interest;”’ 2. the political rewards for being “‘anti;”’ 3. and, the multiple publics and overlap- ping jurisdictions involved in our frac- tionated waste policies. Decline of the Notion of “Common Interest” The perception of events from an in- dividualistic perspective mitigates against definitions of common interest. “Sup- port—even identification-of the common interest becomes elusive under conditions of extreme normative dissensus.”””” While “doing your own thing” is in some re- spects an admirable philosophy of indi- vidualism it tends to collide with the social realities of teenage pregnancies, the spread of lethal diseases, highway shoot- ings, insider trading on the stock ex- change, and homeless hazardous waste. This fragmentation of the common in- terest favors the political activities of sec- tarian voluntary associations. Groups favoring extreme positions and simple so- lutions will tend to dominate when gov- ernment is too weak or divided to provide legitimate leadership. The absence of a notion of common interest favors con- frontation and conflict over compro- mise.*” From this perspective it should come as no surprise that risky waste siting has foundered on the shoals of interest group, local, and sometimes state intran- sigence. Furthermore, since there is no developed notion of common interest there is no incentive for a politician, or an aspiring politician, to take up the ban- ner of safe siting ““somewhere.”’ The Political Rewards for Being “‘Anti’’ All the above arguments foster the con- clusion that political hay is to be made by being anti-siting: not anti-siting in gen- eral, but certainly in particular. If the public does not trust the technology, the waste industry and its regulators, or state and local government to adequately rep- resent their interests on this issue then the only popular role for a politician is to fa- vor safe siting in principle but to quash any siting attempt that might impact on his or her consituency. Since the issue tends to be defined in terms of the little person versus the powerful bureaucracy, the politician is in somewhat the same po- sition as the journalist. To side with the waste industry or government is to ally with evil against good. Like journalists, politicians can be expected to publically place more credence on the pronounce- ments of those who appear to represent the “‘little people,” that is, environmental and anti-nuclear activists. In private, of 236 course, the politician has the unenviable task of negotiating around a number of state and federal agencies and trying to reconcile official views with interest group and local citizen perspectives. Decisive pro-siting political leadership is a highly improbable outcome. The Problem of Multiple Publics and Overlapping Jurisdictions Unpopular political issues become footballs. They get tossed around in the hope that someone will be able to solve the problem. In the process of being tossed around they pick up more and more players who want to get into the game. Eventually, the resulting chaos practically insures the game will never get played. Although there are numerous ex- amples, one will suffice to make the point. The economically strapped town of Edgemont, South Dakota viewed a LLRW disposal site as a source of jobs and revenue. The town had been a ura- nium mining and milling town and its fa- miliarity with radioactive materials translated into less fear. Almost 70 per- cent of the county and 80 percent of Ed- gemont’s citizens voted in favor of the proposed disposal facility in June, 1984. However, anti-nuclear activists forced the issue to a Statewide referendum in which a majority of the State’s voters favored statewide approval before South Dakota could enter into a nuclear waste compact with another state and approval by a ma- jority of voters before any private indus- try could be licensed to open a disposal site.*’ The result was no site. When the Federal Government threw the LLRW problem to the states in 1979 they hoped that they had taken the initial steps toward a solution of a political crisis. However, the requirements of interstate cooperation, intrastate approval, the meeting of both federal and state regu- latory guidelines, the burden of obtaining local cooperation, and pressure from var- ious interest groups has made the entire process something of a nightmare. This RICHARD J. BORD multi-group involvement highlights the limitations of all the proposed solutions. A siting project can be scuttled at a num- ber of junctures by a host of different ac- tors, not the least of which is the court system which has been very sensitive to citizen and interest group arguments on environmental issues. Discussion and Conclusions We are now in a better position to un- derstand the limitations of currently pro- posed solutions to siting problems. More technically adequate risk com- munication has little chance of success- fully competing with the daily “‘scare fare’ which greets us Over our morning newspaper or television news program. It is unlikely to command attention, to be given adequate coverage by the media, or to be trusted as objective. In focused set- tings, such as a local community facing siting, it may be possible to get some peo- ple to carefully digest this kind of infor- mation. However, they will certainly be a minority and will be very constrained by social pressures from neighbors and counterarguments from visiting “‘anti’s’’. Should the entire community be con- vinced that siting is safe then opposition can still emerge at the regional or state level. Since the source of opposition to siting is fear and distrust there are no compel- ling reasons why equity solutions should promote acceptance. Compensation and incentives simply do not address these is- sues. It may be difficult to find a large enough ‘‘carrot” to overcome public fear and distrust. The search for a high-level radioactive waste site is now facing this problem. A more thorough involvement of the affected public in the siting proces could have some effect /F it is acknowledged that the goal of that participation is to put some real power in the hands of the locals. Control is clearly what locals see as a pre- requisite to any serious consideration of siting. However, it may be practically and REACTOR AND NUCLEAR WASTE SITING 237 legally impossible to give them the degree of control necessary to establish trust. Furthermore, even if a local involvement Or an incentive program is successful the project can be halted by other levels of government. This is exactly how a pro- posed Monitored Retreivable Storage fa- cility was recently stopped in Tennessee. “The siting process was stopped by ex- tensive state-wide opposition resulting in legal challenge by the state and vetoes by the governor and state legislature.’ Improved siting technology certainly has a chance of winning some converts. However, like risk estimates in general, debates can go on interminably over whether the new technology is truly more safe or safe enough. Containers fail, mon- itors malfunction, operators doze off and come in hungover, water infiltrates, storms threaten, terrorists could blow it up, and government regulators never have large enough budgets to do a thor- ough job of regulating. The success of im- proved technology depends on establishing trust. That will be difficult to accomplish. All the above paints a grim picture for hazardous facility siting and may lead the reader to the conclusion that all that is left is to pack up and go home. However, the waste issue must be solved. I will end by briefly discussing what I think those concerned with siting will try to do, what will actually happen, and what could hap- pen. Clearly, there will be ongoing attempts to meet the legal guidelines established in the amended LLRW Policy Act and the legal amenities demanded for the siting of other risky facilities. Combinations of all the solutions discussed above will be employed. Some successes will certainly occur and it is possible that a few suc- cesses will stimulate other compacts and states to “bite the bullet.”” No one should be surprised, however, if many states do not have operating sites by the prescribed deadline. Any chance for success of a high-level waste facility in the next two decades will likely depend on a volunteer state. This conflict has been referred to as a second “‘Civil War” and a go-very- slow approach can be expected. The fur- ther establishment of nuclear power plants is likely to depend on geo-political events beyond anyone’s immediate con- trol. The difficulties in solving the radio- active waste issue has provided a back- ended rationale for holding the line on more nuclear power plants. Anti-nuclear activists have high stakes in seeing to it that this issue is not resolved soon. How- ever, another international oil crisis could change the perceived reward-cost ratio for nuclear power. In the meantime, waste will continue to be generated. At present there are strong pressures to reduce waste volumes, not only through treatment technologies and more efficient practices, but through redefining what is hazardous enough to require special treatment. In order to solve their waste problems the medical community may take steps to redefine much of their waste so as to separate it from reactor waste. Suggestions to this effect were made at the recent American Chemical Society meetings. If this hap- pens then anti-nuclear activists will be free to more vigorously attack reactor waste. Since low-level radioactive waste has been a combination of reactor, in- dustrial, and medical wastes there has been some constraints on an all-out at- tack. No one wants to be accused of threatening public health by hampering nuclear medicine. It is likely that more materials will find their way into solid waste landfills and more will be stored on site. The pressures for on-site storage may eventually redefine the entire problem. In line with what environmental activists are proposing, much waste may eventually be stored in expensive, above-ground facil- ities on-site. In other words, there will be a great deal of “muddling through” to invent solutions to the continued waste problem. None of the solutions are likely to be optimal either from a safety or a cost perspective. ; However, it should be made clear that 238 RICHARD J. BORD the bottom line to risky facility siting is, and will remain, public fear and distrust along with political timidity and favor- seeking. Public health and safety and eco- nomic efficiency are the major issues. Many analyists are optimistic that the ex- isting piecemeal approach will, in the long run, favor improved safety while pro- moting democratic ideals.** However, a viable counterargument can be made that a solution involving the long term inter- ests of the public and industry requires planning, negotiation, compromise, and especially leadership from the highest lev- els of government. National mobilization similar to that experienced during war- time may eventually be necessary. Given continued lack of progress, we may be forced to question whether our present course is a Optimal one or whether the long-term impact is simply more eco- nomic and health habilities forced on our progeny. References Cited 1. Freudenburg, W. R. 1985 Waste not: the special impacts of nuclear waste facilities. In: R. G. Post, ed., Waste Isolation in the U.S., Technical Programs and Public Participation, Proceedings of the Symposium on Waste Management, Vol. 3, Tucson, Arizona. 2. Douglas, M. 1985. Risk Acceptability According to the Social Sciences. Russell Sage Foundation, New York, NY. 3. Ruckelshaus, W. D. 1983. Science, Risk, and public policy. Science, 221: pp. 1026-1028. 4. Covello, V. T., P. Slovic, and D. von Winter- feldt. 1987 Risk Communication: a review of the literature. Unpublished Manuscript. p. 79. 5. Con, W. D. and N. R. Feimer. 1985 Commu- nicating with the public on environmental risk: integrating research and policy. The Environ- mental Professional, 7: pp. 39-47. 6. Epstein, S. S., M. D., L. O. Brown, and C. Pope. 1982. Hazardous Waste in America. Sierra Club Books, San Francisco. 7. O’Riordan, T. 1983. The cognitive and political dimensions of risk analysis. Journal of Environ- mental Psychology, 3: pp. 345-354. 8. Douglas, Ibid. 9. Bord, R. J. 1985 Opinions of Pennsylvanians on policy issues related to low-level radioactive waste disposal. Institute for Research on Land and Water Resources Report. The Pennsylvania State University. 10. Schnaiberg, A. 1987 Economics of envi- ronmental regulation: the impact of environ- mental protest dynamics. Paper delivered at the annual meetings of the American Association for the Advancement of Science, Chicago, Ill. 11. DuPont, R. L. 1981. The nuclear power phobia. Business Week. September 7: pp. 14-16. 12. Mitchell, R.C. 1984. Rationality and irration- ality in the public’s perception of nuclear power. In: W. R. Freudenberg and E. A. Rosa, eds., Public Reactions to Nuclear Power: Are There Critical Masses? Westview Press, Inc., Boulder, Colorado. 13. Covello, et. al., Ibid. 14. Slovic, P., B. Fischhoff, and S. Lichtenstein. 1982. Facts versus fears: understanding per- ceived risk. In: D. Kahneman, P. Slovic, and A. Tversky, eds., Judgment Under Uncertainty: Heuristics and Biases. Cambridge University Press, Cambridge. 15. Conn and Feimer, I[bid. 16. Douglas, Ibid., p. 34. 17. Yosie, T. F. 1987. EPA’s risk assessment cul- ture. Environment, Science, and Technology, 21: pp. 526-531. 18. Bord, R. J., P. J. Ponzurick, and W. F. Witzig. 1985. Community response to low-level radio- active waste: a case study of an attempt to es- tablish a waste reduction and incineration facility. ZEEE Transactions on Nuclear Science, Vol. NS-32, December, pp. 4466-4471. 19. Bord, R. J., Ibid. 20. Eisenbud, M. 1984. Radioactivity and you. En- vironment, 26: pp. 6-33. 21. Horneday, A. 1986. Straight about Chernobyl. MS Magazine, IV: pp. 83-86. 22. Freimuth, V. S. and J. P. Van Nevel. 1981. Reaching the public: the asbestos awareness campaign. Journal of Communication, 31: pp. 155-167. 23. Pfund, N. and L. Hofstadter. 1981. Biomedical innovation and the press. Journal of Commun- ication, 31: pp. 138-154. 24. Covello, et. al., Ibid., p. 27. 25. Rothman and Lichter, [bid., p. 51. 26. The Radioactive Exchange. 1987 Low-Level Radioactive Waste Management: Facing the New Realities. A Briefing book Presented to Partic- ipants of the Third Annual Decisionmakers Forum Sponsored by the Radioactive Ex- change, June 16-19, Traverse City, MI. 27. Editorial. 1985. The New Yorker. Feb. 18, Re- ported in Covello, et. al., Ibid, p. 25. 28. Texas Low-Level Radioactive Waste Disposal Authority. 1985 Siting a Low-Level Radioactive Waste Disposal Facility in Texas: Local Govern- ment Participation, Mitigation, Compensation, Incentives, and Operator Standards. Texas Ad- visory Commission on Intergovernmental Re- lations, Austin, Texas. 29. Short, J. F. 1984 Toward the social transfor- mation of risk analysis. American Sociological Review, 49: pp. 711-725. 30. Short, Ibid. 31. McCaughey, J. 1985. South Dakota town dreams of its own nuclear waste dump. The En- ergy Daily, 13: pp. 1 and 4. 32. Peelle, E. 1987. Innovative process and inven- tive solutions: a case study of local public ac- Journal of the Washington Academy of Sciences, Volume 78, Number 2, Pages 239-244, June 1988 ceptance of a proposed nuclear waste packaging and storage facility. Symposium on Land Use Management, Praeger Press, New York, NY. 33. Bullard, C. W. 1987 Issues in Radioactive Waste Management. Paper Presented to the National Advisory Committee of the Institute of Gov- ernment and Public Affairs, University of Illi- nois, Champaign-Urbana, June 15. Round Table Discussion: Policy Considerations McGUIRE: Steven McGuire, Nuclear Regulatory Commission. This is for Dr. Bord. | You expressed the opinion that im- proving technology would not help siting. In view of the last talk, covering state-of- the-art technology, what comment would you make? BORD: As a citizen, I was very excited about the information that was provided in the last talk. I think that kind of dra- matic improvement might have some ef- fect. Now, what would happen, and it is predictable, you would go on 60 Minutes, and someone would try to demonstrate that there are problems with this. There are anti-nuclear activists who, I am sure, would dig up something. But I think we have to look at the whole issue of what reasonable people can agree on. If we can invent a technology that is powerful enough that we can make opportunistic politicians not look so good by opposing it, we will be in better shape. I think that the information provided in the last talk gave some realm of hope in that line. There is one other point there where the technology does interact with insti- 239 tutional problems. The question came up here, How does this affect the waste dis- posal problem, because it certainly makes the siting problem easier. There are two features that need to be considered. One of the things that has happened in the last bit of time is that the waste dis- posal problem is being treated very dif- ferently than it was early on in the fission program. When you believed the nuclear power was very cheap, if you spent any money at all in disposing the waste, you really affected the cost of nuclear power at the front end of the system. Now, luck- ily, nuclear power is very expensive. You can spend fortunes disposing of the waste, and it will hardly affect the cost of power at all. That lets us begin technologically to consider lots of things we couldn’t con- sider before. It also lets us consider, be- Cause uranium is so available, just throwing the stuff away without ever re- processing it. If you do that for the sort of reactor that I spoke most about here, the trick is, you take the fuel as it exists, and if it is capable of surviving in the cen- ter of an operating uncooled reactor with- 240 POLICY CONSIDERATIONS out relinquishing its waste, it is as beautifully packaged as you could possi- bly imagine to put it somewhere else in a hole in the ground where those conditions are not there. So the fuel comes prepack- aged for disposal, and it does become a lot easier. Proving that it survives in one condition makes it a lot more plausible that it survives in another. SORENSON: I like tech fixes, too. I think the public ultimately would want a tech fix for the nuclear power. But I be- lieve the social and institutional process by which the public gets involved in these new technologies and independently comes to accept them as safer is as im- portant as having the safe technology it- self. It’s like the government saying, ‘Trust me. We have this new reactor. It won't fail” will not solve the problem, but it’s the whole social process that must take place as well. BRODSKY: Allen Brodsky, George- town University. I was impressed by Dr. Lidsky’s presentation. I think maybe if we can get some of these ideas across, that would be great, but I still go back to worry about how the media might present it anyhow. We might find new methods that are safer, and this is very good, but if the kinds of myths that have been propagated are dreamed up against the new technol- ogy, the same thing could happen again. I believe that the public can understand this aspect of chance. Somebody men- tioned today that you could not say 1 in 10,000, that it is meaningless. I would like to question that word “‘meaningless.”’ Our only hope is to get the public to think in terms of chance and quantitatively about risk. ; We have to devise ways of doing it and we have to get it to them, not only by person-to-person contact, which I think is important, but we also have to try to get it on the media, and I think there are possibilities of doing that, too. BORD: In this public education/infor- mation program I was on for about three years, we spoke to League of Women Voters and all kinds of civic groups around Pennsylvania. We were very suc- cessful in having them sit there and listen to us and afterwards agree that it was a wonderful presentation, they had much better understanding of radioactive waste issues, and they thought everyone should hear this presentation. I would ask them, “All right. Does that mean that you would be more supportive of a waste site near you?” And they said, “No.” MARKS: Franklin Marks from the U.S. Public Health Service, in the Office of Emergency Preparedness. My office deals a lot with coordinating Public Health Service efforts to combat disasters of one sort or another, often helping work on nuclear power plant problems. Two of the agencies we have worked with often are the Nuclear Regulatory Commission and the Federal Emergency Management Agency. Earlier in Mr. Sorenson’s talk, he was talking to some extent about evacuations, moving people out if necessary. We at some times have had to pay attention to some of the specifics of that, and you can quickly run into some pretty thorny ques- tions. One of them is, How to get people out of an area you want to evacuate if you are talking about patients in a hospital or, secondly, patients in an old age home, or something like that. Then we often have people raise the issue, What about individuals who don’t have cars? Of course, one answer can be mass transit, but that has to be worked out well. Sometimes it even gets a little comical, but it isn’t really funny. What about all the people with cars who ob- viously from time to time will need some gasoline? Will the gas stations be open? If not, you may run into a number of cars running out of gasoline. Of course, where do all the people go? Presumably some miles away, but where do they wind up staying? Is it friends, big mass area, or what have you. Could you address some of these issues, please? SORENSON: Certainly I cannot ad- dress them in a depth to which we have ROUND TABLE DISCUSSION 241 knowledge on them, because there exists a considerable amount of information on how publics behave in evacuations. To date, we have maybe 15 detailed empir- ical studies of different evacuation situa- tions that document those kinds of problems, and we are in the process of developing a lot more information on some of the specific topics that you raise, such as how are hospitals and nursing homes being evacuated? We have a study going on now, funded by FEMA, with Oak Ridge and the Uni- versity of Tennessee, to address those kinds of issues. By and large, the record of information to date indicates evacua- tions occur with surprisingly few great lo- gistic problems, in situations in which warning information gets out to the public in sufficient time for them to take action. People adapt to the amount of time they have available to respond to the hazards. Evacuations prevent a considerable number of deaths and injuries every year from a variety of hazards. So you are faced with a litany of problems. Yet, when you look at the actual record, you find that somehow people are pretty good at taking care of themselves in emergencies, adapting and helping each other to over- come those kinds of problems that you raised. BRODSKY: I do think people need to understand. People get turned off at the end of all these things when the an- nouncement to the public is, ‘““There is no danger.” You cannot say that anymore, because people have heard about the no- threshold concept. They have heard peo- ple like Art Upton get up in public and say, “Any level of radiation is danger- ous.” What people have to realize is that the question is not, ‘Is radiation danger- ous” The question is, ““How much radia- tion is how dangerous?” McCALLUM: I think it is interesting, and I would like to move us back to the positive side of this. I liked Mr. Soren- son’s comments about needing the sort of social machinery to look at evaluating new technologies and dealing with that and, ultimately, achieving the benefits of them. I also wonder if Dr. Lidsky could talk a little bit about research policy and the kinds of things that ought to be con- sidered in the area of research policy to try to move in some of these directions and some of the potential problems, in terms of either economic or political or other kinds of disincentives to evaluating and trying new technologies that might throw some roadblocks in the way. LIDSKY: That is an immense area of discussion you have opened up, of course. It involves the politics of large commercial organizations interracting with the gov- ernment, politics that are implicit in peo- ple making policies that are wide-ranging, long-lived, and possibly not being as pro- ductive as they thought, and all those other issues that I think it is almost hope- less to open up here. Large research programs develop in their wake. Large research organizations are very hard to turn around quickly, for all sorts of reasons. The nuclear industry in this country, for example, is not going to save itself. The idea is to find some trick. In some ways, I took Mr. Soren- son’s comment very much to heart also, because it does not just do to have the technological fix available, especially after I have been advocating that you match your technological fix to what so- ciety needs. You also have to do some degree of institutional karate, and it hap- pens differently, in different ways. It turns out, in this particular case, the particular reactor I was looking at—and here again, each particular case is sul ge- neris. You have to tailor it. I did not men- tion—although not for reasons of hiding it but because I spoke too quickly—that in building a reactor with Level 1 prop- erties, it must be small. If you make it big, it can heat itself up. It took a long time for people to perceive that this was okay. If we believed that big ones were cheaper than small ones, and if we be- lieved in economies of scale, then there was no sense in building a small one. If you also believed, as everyone did 242 POLICY CONSIDERATIONS for a long period of time, that existing reactors were safe enough, then having a reactor that was so much safer was just a marginal inconsequential benefit. It is only recently that people perceive small size being a good thing as far as utilities are concerned—it means they are smaller, they are cheaper and easier to manage; it is easier to build one and test it. But other perceptions come along also. The institutional karate that is used in this particular case comes about because a reactor of small size, if it is going to meet large power needs, is going to have to be built in very large quantities. People who are interested in building small things in large quantities jump at something like this. I discussed this reactor in Japan, and they have difficult siting problems. They have used up their whole sea coast. They have to move everything else inland, in smaller quantities and closer to cities. They need to have demonstrable safety. They are also very used to building things in large quantity, for their own use and for export use. It turns out, my research now is going to be supported by Japan for the next two years. That is a specific an- swer, but it is meant, again, to illustrate a general point. When it comes to technologies, there is no Overriding way to do this, because you are trying to match some very difficult constraints that come from different an- gles. The trick is to find out if you can. It is not always true that you can do it. BURLEY: Gordon Burley, Environ- mental Protection Agency. I would like to pursue that same question of alterna- tive technologies just a little bit further. I started work modeling of severe reactor accidents in 1967 when I was with the old Atomic Energy Commission. We also at that time recognized that there were safer reactors. The German pebble reactor was one. I think you did not mention the mol- ten salt reactor All of these were killed effectively by fiat early on, and some other technologies, evolving technolo- gies, the liquid metal fast breeder reactor, was also killed at about the same time. We have to put this in the context of the time. We did not have any real anti- nuclear sentiment in the country at that point. The decisions that were made by the Atomic Energy Commission effec- tively held. So we went with the light water reactors, which has been indicated are 15 seconds away from disaster. The thing is that we are heading into an era now where the fossil resources are begin- ning to diminish. We are going to have to go to alternative energy sources. The question is, how does one introduce a change of policy at this point into the thinking process so that there is adequate funding. One is talking about lead times of 15 and 20 years on evolving technology. These decisions cannot be made 15 years from now when we are down the road. The question is, What should be done at this point to start moulding public opin- ion to either accept the light water reac- tors with all their warts or try to get some funding for these alternative technologies which might provide a safer environment. LIDSKY: Here again, you have come right to the heart of the institutional issue. This country does not have a long-lasting well-thought-out energy policy. Electric- ity is made by a number of utilities which work in more or less autonomous fashion. Some are very large and very well run. Some are very large and very poorly run. And there is a whole gamut of utilities. That is one of the differences between this country and almost every other, except Germany, by the way, which has a system very much like ours and has a very suc- cessful nuclear program going. They do not have quite the choice we have, and they have somewhat different incentives. Unless you want centralized govern- ment planning—and what you have just done is given me an example of a case where centralized government planning did not work. In fact, if the AEC had had its way, we would have many more of the sort of reactors we are finding we wish we did not have right now. So the natural antipathy to centralized planning of that sort in a place where you have a choice ROUND TABLE DISCUSSION 243 is very valid. The thing you have to do is find a way to make things attractive to the system we have, to the utilities we have. If they are working in a capitalistic sys- tem, as most utilities are, then you find a way that makes it attractive for them to put the power they need on line, cheaper and easier than any other way. That is going to be some entity making reactors of this sort, which can be done now by a single entity because they are small and selling them. Absent that, what we will do is what I said we will do. Each utility will respond individually in a way that makes most sense for them, and that is to put on gas plants and then coal plants. Though I sit in the middle of a nuclear engineering de- partment, I cannot really claim that is going to be a great tragedy for this coun- try. Even as we think about that, and the difficulty I have in developing nuclear re- actors that will win, you can build coal plants now that are many times better than existing ones, many times better than we dreamed they could be, in terms of clean emissions, efficient use, small size, and lots of other things. It is not a panic issue in this country, and it may well be that this time we take the time to do the job right. McCALLUM: Is there a way, from your experience in dealing with waste sit- ing problems and other general issues, to focus the public debate on trying to see things in the context of a larger energy policy and to look at a variety of options and choices. That is a fairly complicated thing to get political force behind, but do you see hopes or have insights into how something like that might work? BOND: I think that we have not failed in communicating with the public so much in the sense that we have not gotten them to understand probability. I think we failed in getting them to understand pro- grams and international competition. It may well be that certain geopolitical events could occur that would tip the bal- ance of costs and rewards and refocus public attention on some other things. Specifically with the problem of the NIMBY syndrome, : do not know. I wish I could be more optimistic about that. But right now, I think we would have to come up with an amazing technology to get peo- ple to accept it, to show some enthusiasm for it. We cannot site incinerators, we can- not site chemical plants. We are fighting that battle right in my home county with solid waste in Pennsylvania right now. The courts have given the public the power to say no, and that is what they are saying. I think that in line with some of the remarks that have been made, perhaps eventually in order to deal with the prob- lem, the change will have to occur in the institutions and in the infrastructure. I really do not want to predict how I think that might go. LIDSKY: There is an aspect of the technology that has been described by our last speaker today that has great appeal from a social policy issue. There are schol- ars who interpret the controversy over nu- clear power in a public reaction against largeness and large scale technology, large scale organizations and the like. There is this resentment among the American public against things that they perceive are out of their control. The idea of a small reactor brings the technology back down in scale to which the individual may feel like they have more opportunity to control the management of that tech- nology. I think at one point the idea of a neigh- borhood nuclear power plant would have been very facetiously received, but the idea has inherent merits on its own. KASPERSON: Perhaps the Chair could add one note of optimism on the radioactive waste siting situation. I have been struck by the experiences of a num- ber of countries in their programs for ra- dioactive waste siting. Sweden is in the process of solving their radioactive waste siting program. They are solving it in a country that has a strong tradition of en- vironmental movement. It has had an ac- tive debate over the situation of nuclear 244 POLICY CONSIDERATIONS power. The institutional situation is that in Sweden there is a local veto right over any industrial plant or waste facility to be located in the community. Sweden has successfully sited several radioactive waste facilities. They have done it partly by locating the facilities at existing nuclear sites, which may indicate some reason for optimism. That may yet be managed with a monitored retrievable storage facility if we build it at Oak Ridge, so DOE may have been at least partly on track with that particular approach. But also in Sweden they are not trying to fine-tune the safety of the facility which is rather critical to this process. The ap- proach in Sweden is that they are going to make the facilities so super safe that they are going to win over the broad con- sensus of expert and even environmental opinion about that. They are not going to try to hedge on the safety issue. By the way, I wish we could convince the American institutions to do that be- cause the process costs in this area are so enormous compared to the substantive costs of putting the issues to bed that it does not make any sense to get in long protracted siting fights and debates if you can overwhelm the problem by additional investment. Sweden has also reached something of a societal consensus on the future of nu- clear power. If you can do that, some of your problems go away in the siting of facilities. I think that if you look at the interna- tional experience, appreciating the fact that cultures are different—and in Swe- den, if you make a decision, basically everybody feels it is their obligation to pull together and make it work; we do not have that luxury—there are important clues as to how this problem can be man- aged. I think we have gone about it poorly, and we have made a lot of mis- takes along the way, but I really do not believe that it is not a manageable prob- lem. QUESTIONER: Under the present so- cial and political climate of wanting the United States’ high technology to be com- petitive, do you feel that the new tech- nology proposed by Dr. Lidsky would find sympathetic avenues for significant development? SPEAKER: Viewing the utilities as ef- fectively independent entities whose job is to make money, the answer is yes, if you can make a buck on it. The trick in that case is to find someone to build the first one. It may be possible to do it here, and if it does not happen here, it will be ~ built elsewhere sooner or later. Eventu- ally, if it is built elsewhere and found suc- cessful, it will be imported into this country. So the answer is that in the long term, very definitely yes. In the shorter range, only if one sees a way to make a relatively clear profit on it. Again, time scales in this country being what the are, to make that relatively clear profit in the relatively short period of time. That requires a lot of things to hap- pen just precisely right, and I am not about to predict that that will happen. There are ways in which it might happen. McCALLUM: This was a very exciting panel. I like the idea of extending this debate to other fora and other places. The panel this afternoon also suggests new ideas and new things that could be in- cluded in those discussions that could be very exciting and very useful. There are things we have talked about before, trying to find ways to get more people involved in it and looking at whether or not, in some of the siting debates or in some of the emergency exercising around existing nuclear facilities might be used as focii for attention to get discussion of some of these broader issues when the awareness or the attentiveness of the public has been enervated because of special events. I think that the conference has done what we wanted it to do, which was to produce some new ideas and some things that can be applied in the future. DELEGATES TO THE WASHINGTON ACADEMY OF SCIENCES, REPRESENTING THE LOCAL AFFILIATED SOCIETIES Pepa Ne Ale SOCIE YP Or) WV ASEM LOM. ors 020 secre. ole see aves ects nie) andine Sow alae Sai calg a ayslerw aie ded Barbara F. Howell PRRMEOPOrICAl SOCICLY OW aASMING (ON). c/s ic rays ei ese SE ss Selle aos 4 8 diane swe slave pie roms ell wien Alayne A. Adams Ase OHM EN STORY Ole SClence CLUB 7.0.5. ive is otc tit os bie be aie boinc Slave wine ccivnceaie ae Albert Gluckman American Association of Physics Teachers, Chesapeake Section ...................... Peggy A. Dixon Warcaesocicty (of America, National Capital Section. ... 22... 026.08. ce ee eee ee William R. Graver American Society of Plant Physiologists, Washington Area Section............... Walter Shropshire, Jr. Washington Operations Research/Management Science Council ....................-. Doug Samuelson lnsrument Society of America, Washington Section... 2.2.2.6. 6 523 ceed ees be eee rene Carl Zeller American Institute of Mining, Metallurgical aiceectroleum: Enomeers, Washington Section ..... 2... 0... 2... bee ee See ae ees Ronald Munson Pe GEE Hae APIA NSECOMOMICES (0 pe Bolo cce oie aie oe by wines are ode o Se Hula eet aleve we wpeiere Robert H. McCracken Mathematics Association of America, MD-DC-VA Section. ................0.00 eee Alfred B. Willcox IS LEIS HEE CIO INC NEIEISES Te ts are, cio decsh blew oie whdin iaeelieiw gale alee lelie vere cvete) sista Miloslav Rechcigl, Jr. OES ENO IO CIE AIP ASSOC AINOM eR Se oles ons oem oid: ee w ae, Von es wise, wins e Mijee guar we opm eR ededm slanete Bete Bert T. King MAS MIME CO AU pUCCUEICAICGTLOUDS 905 coe c.sisis ee oie c Sreje sb s alare, S)L eis ieiw os (e tule aunts pha ne ape Robert F. Brady American Phytopathological Society, Potomac Division................00-:ee ee ee eee Roger H. Lawson Society for General Systems Research, Metropolitan Washington Chapter ..... Ronald W. Manderscheid PAM An ER ACIGES SOCICTY LOtOmMacC hapten c02):)2 5 dea <'e oe se 2 siete c.0' enere tim dike esse # oni ole Stanley Deutsch Pane bedi PISHCHES SOCIEDY a Ee OLOMAG CDAPLEL, -1:)c)c 5.2'e