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 TM 55-1905-223-24-18-1
Repair Flanged Valves.
a. Removal, b. Repair, c. Replacement.
This task covers:
Tool kit, general mechanic's,
At Ship Service Switchboard set
BILGE/BALLAST circuit breaker to the
OFF position. Set FIRE PUMP 1 and
FIRE PUMP 2 circuit breakers to the
OFF position. Tag switches "Out of
Piping system, bilge ballast and
Service - Do Not Operate."
firemain P/N 88529024, refer to
TN 55-1905-223-24P
Warning tags, Item 1, Appendix C
Utility pail, Item 13, Appendix C
Use extreme care when disconnecting. Escaping system
pressure or fluid could cause injury.
NOTE
All flanged type valves are replaced in the same manner.
Isolate valve from piping system.
a.
Trace inlet piping (1, FIGURE 2-260) to nearest manually operated shutoff
(1)
valve.
Close shutoff valve.
(2)
Trace outlet piping (6) to nearest manually operated shutoff valve.
(3)
Close shutoff valve.
(4)
2-985
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