Figure 18. Diesel Engine-Driven Firefighting Pump

0003 00

TM 55-1925-292-14&P

DIESEL ENGINE-DRIVEN FIREFIGHTING PUMP

The diesel engine-driven firefighting pump (figure 18) is located in AMS 1. Its rated capacity is 1000 gal/min

(3785 L/min) with a discharge pressure of 125 PSI (8.6 bar). Its primary purpose is to provide raw water to the

fire monitors. The secondary purpose of the pump is to pressurize the fire main and general service system in

the event of a malfunction of the fire and general service pumps.

Figure 18. Diesel Engine-Driven Firefighting Pump

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

fire alarm pull station (figure 19, item 1) or automatic actuation through the use of fusible links (figure 19, 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 19, 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 19, item 5). The distribution nozzle tips have blow off caps to keep the nozzle

orifices free of cooking grease buildup.

0003 00-20