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 TM 55-1925-273-10-1
0032 00
When the FM-200 fire suppression system is actuated to extinguish a fire, allow the ERWWS to operate for a minimum of
fifteen minutes. During the ERWWS operating period, valve WWS-2 (figure 7, item 2) should be OPENED for ten
seconds every three minutes. WWS-2 is the ERWWS strainer blow off and will flush foreign matter from the inline strainer
basket during operation of the ERWWS. The ERWWS operating instructions (figure 9) are posted above the ERWWS
station valves in the main deck vestibule.
Figure 8. Engine Room Water Washdown System Sprinkler Head
WWS CONTROL STATION
A. START-UP PROCEDURE
WWS-2
1. ENSURE FIRE MAIN SYSTEM HAS BEEN PRESSURIZED
(SEE FIRE MAIN SYSTEM OPERATION PLACARD).
WWS-1
2. UNLOCK VALVE WWS-1.
3. OPEN VALVE WWS-1.
NOTE: IF Y STRAINER IS CLOGGED, SEE BLOW OFF
EXISTING
PROCEDURE.
FIRE MAIN
4. OPERATE FOR MINIMUM OF 15 MINUTES.
B. SECURING PROCEDURE
1. CLOSE VALVE WWS-1.
ENGINE ROOM
2. LOCK VALVE WWS-1.
WWS PIPING
3. SECURE FIRE MAIN SYSTEM (SEE FIRE MAIN
CONTD TO NOZZLES
SYSTEM OPERATION PLACARD).
VALVE LEGEND
BLOW OFF PROCEDURE
WWS-1 ENG RM WWS CONTROL VALVE
WWS-2 ENG RM WWS STRAINER BLOW OFF
1. OPEN VALVE WWS-2 MOMENTARILY.
2. CLOSE VALVE WWS-2.
FIRE MAIN IMPACT
DURING OPERATION OF WWS RESIDUAL CAPACITY
OF THE EMERGENCY (NO. 1) FIRE AND SALTWATER
SERVICE PUMP IS INADEQUATE TO BE USED FOR
ANY OTHER PURPOSE.
Figure 9. Engine Room Water Washdown System Operating Instructions
0032 00-7
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