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Figure 15. Pilothouse and 01 Level Fire Station Locations
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TM-55-1925-292-14-P Firefighting Fire Alarm and Fire Suppression Systems Inland and Coastal Large TUG (LT) Manual
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Figure 18. Diesel Engine-Driven Firefighting Pump
TM 55-1925-292-14&P
0003 00
FIRE MONITORS
Three fire monitors (figure 16) are provided primarily to fight fires on other vessels when rendering aid. The fire
monitors are located on the top of the pilothouse to provide 360-degree coverage of the vessel. Each fire
monitor is rated at 500 gal/min (1,893 L/min) with a 100 PSI (6.9 bar) discharge pressure. The fire monitors are
capable of directional and elevation control, and they can dispense both raw water and Aqueous Film-Forming
Foam (AFFF). The diesel engine-driven firefighting pump is the primary supply for the fire monitors.
Figure 16. Fire Monitor
AQUEOUS FILM FORMING FOAM (AFFF) PUMP
The AFFF pump (figure 17) is located in AMS 1. It is a horizontal gear pump with a rated capacity of 60 gallons
(227.1 liters) per minute. Normal operating pressure is 125 PSI (8.6 bar). The AFFF pump is part of a system
that includes a ready service tank, the AFFF pump, a proportioner, and piping specifically suited for the delivery
of AFFF. AFFF can only be expended from the fire monitors. AFFF is stored in its own tank in concentrate form.
The pump is used to force AFFF concentrate through the proportioner into the fire main at a rate of 6 parts foam
concentrate to 94 parts raw water. When in use, the 525-gallon tank is capable of producing 13,344 gallons of
AFFF. One or more fire monitors shooting AFFF will expend the ready service tank in less than nine minutes.
Figure 17. AFFF Pump
0003 00-19

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