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 TM 55-1905-223-10
WARNINGS
The Water Washdown System (WWS) is not designed nor intended to
be a stand alone fire extinguishing system. It is designed to be used
in conjunction with the installed FM-200 fixed fire extinguishing system.
In the event of an onboard fire emergency failure to activate the FM-200
fixed fire extinguishing could result in equipment damage, death or
serious injury.
To reduce temperatures within the protected space and manage the risk
of HF exposure to humans, the WWS is designed and intended to be
operated for a minimum of 15 minutes. This procedure should be
followed to the full extent or death or serious injury could occur.
Operate the WWS for a minimum of fifteen (15) minutes. During the WWS operating period,
approximately every three (3) minutes, open valve WWS-2, tunnel WWS strainer blow off for
approximately ten (10) seconds. This will allow any foreign matter to be flushed from the in-
line strainer basket.
d. Activation Procedures Bow Thruster Room WWS
WARNING
The Water Washdown System (WWS) is not designed nor intended to
be a stand alone fire extinguishing system. It is designed to be used in
conjunction with the installed FM-200 fixed fire extinguishing system.
In the event of an onboard fire emergency failure to activate the FM-200
fixed fire extinguishing could result in equipment damage, death or
serious injury.
Evacuate all personnel from the protected space.
WARNING
To provide adequate flow of seawater to the bow thruster WWS, the two
engine room fire pumps must be operated at minimum pressure of 91 psi.
During operation of the WWS, residual capacity of one engine room fire
pump exists for two 1 " fire hoses at full stream or four 1 " hoses at
spray.
During operation of the WWS, residual capacity of the two engine room
fire pumps exists for four 1 " fire hoses at full stream or nine 1 " hoses
at spray. Failure to operate the two engine room pumps at 91 psi could
result in equipment damage or serious injury to personnel.
Place the two (2) engine room fire pumps online at maximum operating pressure.
Activate the WWS by unlocking and opening valve WWS-1, bow thruster room WWS control
valve. Valve WWS-1 is located in the bow thruster room WWS control station located in the
tunnel, below main deck, bulkhead 17, starboard side.
2-744
Change 10
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