§ 149.481 - Other fire extinguishing systems.

(a) Each PPC must have a manually or automatically operated fire extinguishing system in addition to the fire main system required under § 149.451 that is approved by the Commandant and meets the National Fire Protection Association standards listed in paragraph (e) of this section in the following locations:

(1) Storerooms.

(2) Workrooms containing flammable liquids.

(3) Pump rooms.

(4) Machinery spaces.

(b) Each halogenated agent or CO2 system in a compartment smaller than 6,000 cubic feet, and each sprinkler system, must be automatic.

(c) Each halogenated agent or CO2 system in a compartment larger than 6,000 cubic feet, and each foam system, must be manual.

(d) The systems selected must match the hazard to be protected as follows:

(1) Storerooms must use water sprinklers or CO2.

(2) Workrooms containing flammable liquids, pumprooms, and machinery spaces must use CO2, halogenated agents, or high expansion foam.

(e) Each system required under paragraph (a) of this section must meet one of the following performance standards:

(1) Water sprinkler system—NFPA No. 13.

(2) Carbon dioxide system—NFPA No. 12.

(3) Halogenated agent system—NFPA No. 12A.

(4) Foam system—NFPA No. 11A.

(f) Arrangement requirements contained in 46 CFR 95.15-10, 15 and 20 must be complied with.

(g) Each system required under paragraph (a) of this section must activate the general alarm system when it operates.

(h) Spaces that are protected by a carbon dioxide system or halogenated agent system and are normally accessible to persons on board must be fitted with an approved audible alarm that sounds automatically 20 seconds before the extinguishing agent is admitted to the space. The alarm must be conspicuously and centrally located.

(i) To the extent practicable, materials in each item of equipment required by paragraph (a) of this section must have resistance to the adverse effects of the marine environment.