Figure 19. Galley Fire Suppression System

TM 55-1925-292-14&P

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Activation of the galley fire suppression system is accomplished manually by pulling the fire alarm pull

station (figure 19, item 1) or automatically by the melting of a fusible link (figure 19, items 2 and 3). Once the

system has been manually or automatically activated, the gas charge propels the extinguishing agent (figure 19,

item 4) to the distribution nozzles (figure 19, item 5). The electrical source for the protected equipment is not shut

off, and the agent and the hot grease mix to form foam. This foam temporarily seals the combustible vapors,

helping to inhibit re-ignition. The crew must secure the galley heat producing equipment. Once the galley fire

suppression system has been activated, the Gaylord washdown system (figure 19, item 6) is activated in the fire

cycle and sprays water into the Gaylord hood ventilation ductwork. Ventilation ducts are automatically secured by

the activation of the Gaylord washdown system.

D.C.

LOCKER

CREW'S MESS/

BOATSWAIN'S

RECREATION AREA

STORES

GALLEY

MAIN DECK

Figure 19. Galley Fire Suppression System

ARMS LOCKER DRENCHING SYSTEM

The arms locker drenching system is connected to the fire main system. The system is designed to provide raw

water to the arms locker in the event of a fire or excessive high temperatures. The arms locker drenching

system must be manually activated once the fire main has been charged. The system can be activated in the

boatswain's store (local) or from the 0-1 level (remote) at the bow by means of a reach rod valve system.

System activation occurs when the thermal heat detector (figure 20, item 1) senses a temperature above 105 F

(40.5 C). The thermal heat detector sends an alarm signal to the pilothouse indicating high temperature

conditions in the arms locker. The crew shall then investigate the situation and, if necessary, the fire main

system would be charged. Once it is determined that the alarm condition exists and the fire main system is

charged, the manual activation valve (figure 20, item 2) is OPENED either locally or remotely. As raw water

enters the piping system in the arms locker, a pressure switch (figure 20, item 3) activates an alarm in the

pilothouse to indicate that the arms locker drenching system has been activated. The raw water from the fire

main flows into the arms locker and out of two sprinkler heads (figure 20, item 4). Once activated, the system

will continue the flow of raw water into the arms locker until the manual activation valve is closed or the fire main

system is secured.

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