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 TM 55-1925-273-10-1
0032 00
GALLEY FIRE SUPPRESSION SYSTEM
The galley fire suppression system is designed to extinguish fires that originate in the galley and the galley cooking
equipment. The galley fire suppression system is a pre-engineered, wet chemical, cartridge operated, regulated pressure
type extinguishing system. The system is capable of manual activation through the use of a manual pull box (figure 10,
item 1) or automatic actuation through the use of fusible links (figure 10, items 2 and 3) rated at 500 F (260 C) and
360 F (182 C), respectively.
The extinguishing agent is formulated with an aqueous solution of organic salts with a ph range between 7.8 and 8.2. It is
designed for flame knock down and foam coverage of grease related fires. The wet chemical agent is stored in a 3-gallon
(11.3 liter) carbon steel tank housed in a stainless steel enclosure (figure 10, item 4) mounted on the starboard bulkhead of
the galley. The storage tank has a working pressure of 100 PSI (6.9 bar). The extinguishing agent is propelled by the use
of a gas cartridge of carbon dioxide or nitrogen gas and delivered to the distribution nozzles (figure 10, item 5). The
distribution nozzle tips have blow off caps to keep the nozzle orifices free of cooking grease buildup.
Activation of the galley fire suppression system is accomplished manually by pulling the manual pull box (figure 10,
item 1) or automatically by the melting of a fusible link (figure 10, items 2 and 3). Once the system has been
manually or automatically activated, the gas charge propels the extinguishing agent (figure 10, item 4) to the distri-
bution nozzles (figure 10, 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 acti-
vated, the Gaylord washdown system (figure 10, 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.
1
D.C.
UP
LOCKER
CREW'S MESS/
BOATSWAIN'S
DN
RECREATION AREA
STORES
GALLEY
2
5
3
4
6
MAIN DECK
Figure 10. Galley Fire Suppression System
0032 00-8
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