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TM 55-1925-292-14&P
0002 00
FM-200 FIRE SUPPRESSION SYSTEM
The FM-200 fire suppression system is a manually actuated, stand-alone, total flooding fire suppression system.
It is designed to protect the engine room, frames 21 to 44, Auxiliary Machine Space (AMS) 1, and frames 44 to 54
by discharging FM-200 gas in the event of a fire in the engineering spaces. The FM-200 system consists of an
upper discharge system, a lower discharge system, and an alarm system.
The upper discharge system uses two 600 lb (272 kg) cylinder assemblies to rapidly flood the areas above the
bilge level with FM-200 gas. The upper discharge system also actuates the 60-second delay warning.
The lower discharge system uses a 200 lb (91 kg) cylinder assembly to flood the engine room bilges with FM-200
gas.
The FM-200 fire suppression alarm system contains two pressure operated switches located in AMS 2, five
amber strobe lights located in the engine room and AMS 2, two electric horns located in AMS 1 and in the engine
room, and an alarm bell installed in the engine room.
The technical characteristics of the FM-200 Fire Suppression System are contained in table 8.
Table 8. FM-200 Fire Suppression System Technical Characteristics
Item
Data
Manufacturer ....................................................................................................................... Kidde
Model .......................................................................................................................... B0716X002
Series ................................................................................................................... LT-128 specific
Type ....................................................................................................... CO2 time delay activated
Rated Capacity .................................................................................... 878 lb (398 kg) total agent
Voltage .............................................................................................................................. 115 Vac
24 Vdc
ENGINE ROOM WATER WASHDOWN SYSTEM (ERWWS)
The ERWWS is installed in the engine room and AMS 1 and is used in conjunction with the FM-200 fire suppres-
sion system. The ERWWS is a manually activated system that operates to quickly reduce a compartment's
temperature prior to discharge of FM-200 agent, minimizing the production of Hydrogen Fluoride (HF) gas. The
ERWWS is a mitigating washdown system that provides general overhead coverage to the protected spaces
using an overhead sprinkler grid. The sprinkler grid is piped directly to the existing fire main and uses raw water
from fire and general service pump 1. The ERWWS components are manufactured using stainless steel compo-
nents.
The technical characteristics of the ERWWS are contained in table 9.
Table 9. ERWWS Technical Characteristics
Item
Data
Manufacturer ..................................................................................................... CEB, Hythe, U.K.
Model .................................................................................................................... LT-128 specific
Rated Capacity .................................................................... 200 gallons (757 liters) per minute at
123 PSI (8.5 bar)
Flow Requirements .............................................................. 140 gallons (530 liters) per minute at
80 PSI (5.5 bar)
0002 00-25

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