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Page Title:
PREVENTIVE MAINTENANCE CHECKS AND SERVICES (PMCS) - continued |
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 TM 55-1915-251-24&P
PREVENTIVE MAINTENANCE CHECKS AND SERVICES FOR WATER WASHDOWN SYSTEM (WWS)
The following provides the preventive maintenance checks and services required to maintain each WWS in a fully
operational condition:
Item
Maintenance
No.
Interval
Item to be Inspected
Level
Procedure
1
Weekly
Control valve
Crew
Charge fire main to operating pressure,
perform a visual inspection to verify WWS is
free of leaks. If leaks are discovered, repair
Control Valve.
2
Monthly
Control valve
Crew
Verify fire main is not charged.
Inspect control valve handle locking
mechanism to ensure it is free and operates
properly. Exercise WWS control valve by
unlocking valve handle and operating control
valve through two (2) openings and closings.
Close valve and verify lock is engaged. If
control valve fails to operate, repair or
replace.
3
Monthly
Strainer blow off
Crew
Verify fire main is not charged.
Exercise WWS strainer blow off procedure
through two (2) openings and closings. Leave
WWS strainer blow off valve in closed
position. If valve fails to operate, replace
valve.
4
Post system
Complete system
General
Test the system per testing requirements
disassembly
Support
identified on Drawing LSV-5231-1. If system
fails to meet test requirements, repair system,
and retest system.
5
Triennial
Control valve, strainer,
General
Perform a flow test. Refer to drawing LSV-
and piping
Support
5231-1 for system flow requirements. If
system fails to meet flow requirements, repair
Bow Thruster Emergency Fire Pump and/or
Engine Room Fire Pump(s) and retest.
6
Post system
Strainer
Crew
Remove, clean, and reinstall strainer basket.
activation
5/(6 blank)
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