scope:

This specification covers the requirements of light-oil fired, low pressure steam, vertical firetube boilers.

The boilers covered by this specification shall be of the following sizes as specified (see 6.2):

Sizes. Size 1 - Up to 320,000 British thermal units per hour (Btu/hr) (93, 782.75 watt (W)), output capacity. Size 2 - 320,001 to 2,000,000 Btu/hr (93,783.05 to 586,142.2 W), output capacity.

The specification number and size are combined to form the specification part numbers for the firetube steam boilers covered by this specification (see 6.6). The part numbers for the firetube steam boilers are established as follows: 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, 1000 23rd Avenue, Port Hueneme, CA 93043-4301, by using the Standardization Document Improvement Proposal (DD Form 1426) appearing at the end of this document or by letter.

intended Use:

Boilers covered by this specification are intended primarily for use at overseas installations to supply low pressure steam for heating purposes.