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ENGINE ROOM WATER WASHDOWN SYSTEM (ERWWS)
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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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Table 1. Fire Station Locations
TM 55-1925-292-14&P
0003 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 11, 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 13) are posted above the ERWWS station valves in the main deck vestibule.
Figure 12. 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 13. Engine Room Water Washdown System Operating Instructions
0003 00-15

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