LOCATION AND DESCRIPTION OF MAJOR COMPONENTS
1. FM-200 Engine Room Alarm Bell (figure 2, item 1). This engine room alarm bell indicates that pressure
switch PS-1 has been activated and FM-200 will be released into the protected spaces in 60 seconds.
2. FM-200 Manual Pull Boxes (figure 2, items 2 and 3). These pull boxes provide the means for normal remote
actuation of the FM-200 fire suppression system.
3. Water Washdown Station (figure 2, item 4). This water washdown station permits raw water to flow from the
fire main system to the engine room water washdown system.
4. Hydrogen Fluoride (HF) Gas Sampling Port (figure 2, item 5). This port allows sampling of the atmosphere in
the protected space.
5. Overhead Discharge Nozzles (figure 2, item 6). These nozzles deliver the FM-200 agent to the upper areas
of AMS 1 and the engine room.
6. FM-200 Strobe Lights (figure 2, item 7). These strobe lights are activated by pressure switch PS-1 and
indicate that the FM-200 system will be activated within 60 seconds.
7. FM-200 Warning Horns (figure 2, item 8). These warning horns are activated by pressure switch PS-1A and
indicate that the FM-200 system will be activated in 60 seconds.
8. FM-200 Relay Box (figure 2, item 9). This relay box houses the relays required to shut down the systems
when PS-1 is activated.
9. Manual/Pressure Operated Control Head (figure 2, item 10). This control head permits both manual and
pressure actuation of the FM-200 discharge delay valve. When activated manually, FM-200 discharge is
activated without warning horns, strobe lights, or the FM-200 bell sounding.
10. FM-200 Discharge Valve (figure 2, item 11). This discharge valve permits the discharge of FM-200 fire
suppression agent from the 600 lb cylinders.
11. Discharge Delay Valve (figure 2, item 12). When CLOSED, the 60-second delay is active. When OPENED,
the 60-second delay is overridden.
12. Discharge Delay Cylinder (figure 2, item 13). This discharge delay cylinder enables the 60-second delay
when the discharge delay valve is CLOSED.
13. Pressure Activated Switch PS-1 (figure 2, item 14). When the FM-200 system is actuated, PS-1 automati-
cally secures engine room and AMS 1 ventilation, Ship's Service Diesel Generator (SSDG) 1, SSDG 2, the
bow thruster engine, the pump drive engine, and the fuel oil transfer pumps. PS-1 also sounds an alarm bell
and energizes the amber strobe lights.
14. Pressure Activated Switch PS-1A (figure 2, item 15). When the FM-200 system is actuated, PS-1A energizes
the warning horns in the engine room and AMS 1, and the amber strobe lights in the engine room, AMS 1,
and AMS 2.
15. Cable Operated Control Head (figure 2, item 16). When the release T handle is pulled, this control head
releases CO2 gas that controls the discharge of FM-200 from the cylinders.
16. Discharge Valve (figure 2, item 17). This discharge valve controls the discharge of CO2 gas from the CO2
17. CO2 Cylinder (figure 2, item 18). This cylinder stores the CO2 gas that controls actuation of the FM-200