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 TM 55-1905-223-10
1-24. Laundry Equipment. Laundry equipment is used by the LCU crew to wash, dry and maintain
uniforms and linen. Laundry equipment consists of an electric automatic washer, electric dryer, ironing
board, clothes wringer, double sink and storage cabinet. The automatic washer and double sink drain to
the ship's sewage piping system.
1-25. Fire Fighting System. The fire fighting system provides fire stations and specialized chemical fire
suppression equipment throughout the vessel. The fire fighting system consists of HALON fire
suppression systems, foam proportioners, foam tank, fire stations, fire monitors, fire fighting equipment
and washdown system.
NOTE
Not applicable to vessels with FM-200 Fire Suppressant System installed.
Reference paragraph 2-46 through 2-47 for FM-200 and Water Washdown
System operation. Reference TM 55-1905-243-24&P, LCU-2000, FM-200
Fire Fighting System for maintenance and installation of FM-200 components.
a. HALON 1301 Fire Suppression System. The HALON system provides fire suppression where
highly flammable conditions exist. These areas are the main engine room and paint locker room. The
system may be manually actuated by pull cables or pneumatic actuators. Rate of rise temperature
detectors, when activated, set off an alarm in the pilothouse; however, the detectors do NOT
automatically start the HALON system. There is a 60 second delay during which the siren sounds,
warning personnel to evacuate the protected area. Pressure switches interconnected with the electrical
system of the LCU are activated during the delay for ventilation equipment and lube/fuel oil pump
shutdown. Upon discharge, the HALON cylinders will release and flood the designated area in
approximately 10 seconds.
b. Foam Proportioners. The fire fighting system has the capability of inducing aqueous film
forming foam (AFFF) into the fire monitors and foam stations. Liquid AFFF is induced into the system via
two AFFF three-way proportioners that provide suction to the AFFF tank when water pressure is supplied
from either fire pump No. 1 or 2, auxiliary fire pump or bilge/ballast pump through system alignment. The
system has the capability to discharge sufficient foam to cover the main deck through fire monitors port
and starboard (pilot house top), foam station 2 (pilot house top) and foam station 1 (engine room) with 6
inches of foam. This foam proportioning system can be aligned to supply seawater only, by closing the
two AFFF tank suction valves.
c. Fire Stations. Fire stations provide seawater for fire suppression throughout the ship. Fire
stations consists of fire plugs connected to the bilge/ballast and fire main piping system. Installed at each
fire station is an all-purpose nozzle with 50 ft. of hose and a spanner wrench.
d. Fire Monitors. Two fire monitor stations are located on the pilot house top. The monitors
provide 360-degree coverage of the main deck. Each monitor has both horizontal and vertical control.
These monitors can be aligned to disperse seawater or foam. Piping for the fire monitor supply is routed
out of the machinery space via risers to the 02 level (FIGURE 1-35) pilot house top (port and starboard).
e. Dry Chemical Extinguishers. Dry chemical extinguishers provide fire suppression for chemical
and liquids that are difficult to extinguish. Each disperses a powder that interrupts the chemical reaction
of the fire. The chemicals suspend fine particles in the fire to screen the fire from oxygen and fuel
sources, thereby extinguishing the fire.
Change 10
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