Figure 13. Engine Room Water Washdown System Operating Instructions

TM 55-1925-292-14&P

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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

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