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 TM 55-1905-223-10
WARNING
The water washdown system (WWS), installed to augment the
bow thruster room FM-200 System, shall be activated prior to
actuation of the FM-200 Fixed Fire Extinguishing System.
During operation of the WWS, sufficient fire main capacity of
one (1) engine room fire pump exists for two (2) 1 " fire hoses
at full stream or four (4) 1 " hoses at spray.
During operation of the WWS, sufficient fire main capacity of two
(2) engine room fire pumps exists for four (4) 1 " fire hoses at
full stream or nine (9) 1 " hoses at spray.
To provide adequate flow of seawater to the bow thruster room
WWS, the engine room fire pumps must be operated at a minimum
pressure of 91 psi or equipment damage, death or serious injury
could occur.
CAUTION
The WWS should always be ready to immediately deploy by
disengaging the locking mechanism on the ball valve handle.
Pad locking of this handle should only occur during system
maintenance or equipment damage, death or serious injury
could occur.
Activate the WWS by unlocking and opening valve WWS-1, Bow Thruster Room WWS
Control Station, located in the Tunnel (3-17-0-Q), Starboard side, watertight bulkhead 17.
Refer to paragraph 2-64 for operation of the Water Washdown System (WWS).
(3)
Secure Ventilation. Secure powered ventilation to the protected space. This can be
accomplished locally at the motor-controller if the situation allows during the evacuation
process, at the FM-200 Storage Cylinders located in the tunnel by manually lifting the
plungers located on top of the FM-200 pressure switches or by shutdowns that will occur
automatically during FM-200 system actuation.
Ensure the following Powered Ventilation system is secured: Bow Thruster Room
Supply Fan
Ensure the following Diesel Engine is secured: Bow Thruster Diesel Engine
Secure the following openings to the protected space:
OPENING
LOCATION
Bow Thruster Room Power Vent Supply
Main Deck Weather Area (1-0-0-WEA),
Cover
Port Side, Frame 9
Bow Thruster Room Natural Vent Exhaust
Main Deck Weather Area (1-0-0-WEA),
Cover
Starboard Side, Frame 9
Bow Thruster Room Escape Scuttle
Forecastle Deck Weather Area (01-0-1-
WEA), Starboard Side, Frame 9
Bow Thruster Room Watertight Door
Below Main Deck, Starboard Side, Water-
Tight Bulkhead 17
Tunnel Vent Watertight Closure (Fwd)
Below Main Deck, Starboard Side, Water-
Tight Bulkhead 17
Change 10
2-729
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