[INCH-POUND]
F-B-2903
July 29, 1998
SUPERSEDING
MIL-B-17452E
28 August 1990
Beneficial comments, recommendations, additions, deletions, clarifications, etc. and any data
which may improve this document should be sent to: Officer In Charge (Code 15E2), Seabee
Logistics Center, 4111 San Pedro St., Port Hueneme, CA 93043-4410, by using the
Standardization Document Improvement Proposal (DD Form 1426) appearing at the end of this
document or by letter.
AMSC N/A FSC 4410
FEDERAL SPECIFICATION
BOILERS, STEAM AND HOT WATER, FIRETUBE, SCOTCH PACKAGED TYPE
(320,001 TO 35,000,000 BTU/HR THERMAL OUTPUT CAPACITY)
The General Services Administration has authorized the use of this
specification by all Federal agencies.
1. SCOPE AND CLASSIFICATION
1.1 Scope. This specification covers scotch firetube packaged steam boilers and hot water
generators.
1.2 Classification. The steam boiler or hot water generator shall be of the following types, sizes,
and classes (see 6.2).
TYPES
Type I - Steam boiler producing low pressure steam not greater than 15 pounds per square
inch gage pressure (psig) (103 kilopascal gage (kPa (gage)) pressure.
Type II - Steam boiler producing high pressure steam between 16 and 150 psig (111 and
1 034 kPa (gage)).
Type III - Steam boiler producing high pressure steam between 151 and 350 psig
(1 041 and 2 413 kPa (gage)).
Type V - Hot water generator producing low temperature water not greater than
160 psig (1 103 kPa (gage)) or 250 degrees Fahrenheit (°F) (121° Celsius (°C)).
Type VI - Hot water generator producing high temperature water not less than 161 psig
(1 110 kPa (gage)) or 251 °F (121 °C).
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