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Full text of "Electrical heating tape for slip-on pumper units"

BLM LIBRARY 




T/N 262 

Filing Code 9140 

Date Issued February 1975 



TECHNICAL NOTE 



U.S. DEPARTMENT OF THE INTERIOR - BUREAU OF LAND MANAGEMENT 

ELECTRICAL HEATING TAPE 

FOR 

SLIP-ON PUMPER UNITS 

by 

Lloyd W. Morrison 

Montana State Office 




Auxiliary (portable type) electrical generators can 
be used where no commercial source is available. 



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Additional copies of Technical Notes are available from DSC, Federal Center Building 50, Denver, Colo., 80225 



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An employee suggestion submitted by Lloyd W. Morrison, Montana State Office, 
recommends a procedure for protecting some of the more exposed and vital 
parts of pump units found on slip-on pumper units that often necessitated 
draining the units to prevent freezing. This suggestion has been adopted 
for all Bureau offices on an optional basis. 

Standby fire pumper slip-on units are often used in early season fires and 
in cases in late season when the probability of freezing is present. Low 
temperatures can and often do occur during daytime hours when tanker units 
are exposed, especially in the higher elevations of the northern areas. 

Many times it is inconvenient to drain pumper units each night and run anti- 
freeze through the system. Not only is it inconvenient but it is somewhat 
expensive and constitutes a delay in getting the unit operational,, The use 
of properly installed electrical heating tape can overcome the necessity of 
drainage. Naturally the use of this device is not intended to be used when 
the fire season is finally over and the units are to be stored for the 
winter. 

In some cases electrical commercial outlets are not available even at some 
district warehouse yards „ In cases where an electrical source is unavail- 
able the electric heating tapes can be plugged into a portable electric 
supply. Districts not having such electrical generators can obtain them 
through the BIFC warehouse on a rental basis. 

The cost of draining and refilling tankers exceeds the expense of purchas- 
ing and wrapping equipment with the electrical heating tape. 






t&St £*50 



Example of one type of 
electric heat tape. There 
are many lengths, types 
and styles available. All 
tapes should be UL approved. 




Note : 

Author of suggestion is not 
recommending any special type 
of tape by trade name. A 
variety of types are on the 
market and care should be ex- 
ercised in securing heat tapes 
to determine that they will do 
the job intended. In most cases 
all manufacturers of heating 
tapes warn against using them 
on plastic pipe. 



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Care must be taken in 
wrapping to be sure tape 
does not overlap. Read 
directions on the package 
carefully and follow in- 
stallation directions. 



View showing length of one 
style tape. This particular 
style was 18 feet long„ 





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ELM Library 
D-555A, Building 50 
Denver Federal Center 
p . Box 25047 
Denver, CO 80225-0047 




Close-up view of heating 
tape wrapped on exposed 
vital areas „ Each portable 
unit is undoubtedly diff- 
erent in design. 



Each bumper will have to 
be looked over to deter- 
mine those points in the 
system most susceptible 
to freezing. 




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Derive 



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P.O. Box £5047 




Care must be taken in 
wrapping to be sure tape 
does not overlap. Read 
directions on the package 
carefully and follow in- 
stallation directions. 



View showing length of one 
style tape. This particular 
style was 18 feet long 




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GPO 858 - 170