46 C.F.R. § 108.477 Fire hydrants.
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(a) If a fixed foam extinguishing system has outlets in a main machinery space, at least 2 fire hydrants, in addition to the fire hydrants required by §108.423 of this subpart, must be installed outside the entrances to the space with each at a separate entrance. (b) Each hydrant must have enough hose to spray any part of the space. (c) Each hydrant must have a combination nozzle and applicator.
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PART 108—DESIGN AND EQUIPMENT
Subpart D—Fire Extinguishing Systems
Foam Extinguishing Systems
§ 108.477 Fire hydrants.

