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MIL-B-17452 Revision E, August 28, 1990
Complete Document
Superseded By: F-B-2903
BOILERS, STEAM AND HOT WATER, FIRETUBE - SCOTCH PACKAGED TYPE (320,001 TO 35,000,000 BTU/HR THERMAL OUTPUT CAPACITY)
Includes all amendments and changes through Cancellation Notice 1, July 29, 1998
Additional Comments: CNCL S/S BY F-B-2903
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This specification covers scotch firetube packaged steam boilers and hot water generators.

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).
    Type II  - Steam boiler producing high pressure steam between 16 and
               150 psig.
    Type III - Steam boiler producing high pressure steam between 151 and
               350 psig.
    Type V   - Hot water generator producing low temperature water not
               greater than 160 psig or 250 degrees Fahrenheit (°F).
    Type VI  - Hot water generator producing high temperature water not less
               than 161 psig or 251°F.


Beneficial comments (recommendations, additions, deletions) and any pertinent data which may be of use in improving this document should be addressed to: Commanding Officer (Code 156), Naval Construction Battalion Center, Port Hueneme, CA 93043-5000, by using the self-addressed Standardization Document Improvement Proposal (DD Form 1426) appearing at the end of this document or by letter.
SIZES

    Size 2  - Thermal output capacity between 320,001 and 10,000,000
              British Thermal Units per hour (Btu/hr).
    Size 3  - Thermal output capacity between 10,000,001 and
              35,000,000 Btu/hr.
CLASSES

    Class 1 - Heavy oil fired.
    Class 2 - Light oil fired.
    Class 3 - Gas fired.
    Class 4 - Combination heavy oil and gas fired.
    Class 5 - Combination light oil and gas fired.