MAINTENANCE OF PIPING SYSTEM, SEWAGE AND PLUMBING
3-253. REPLACE/REPAIR WELDED VALVES.
This task covers:
Tool kit, general mechanic's,
At Ship Service Switchboard, set MISC
MCHRY POWER PANEL circuit breaker
Torch outfit, cutting and
to OFF position. At Marine
welding medium duty, oxygen
Sanitation control module set
and acetylene, 3433-00-357-8116
main circuit breaker to OFF position.
Tool kit, welder, 5180-00-754-0661
Tag switches "Out of Service-Do
All commodes tagged "Out of Service-
Do Not Operate."
Piping system, sewage and
plumbing, P/N 8528023 refer
General Safety Instructions
to TM 55-1905-223-24P
Warning tags, Item 1, Appendix C
Ensure system is turned OFF and
Utility pail, Item 13, Appendix C
tagged to prevent operation during
maintenance. Generated pressure
could cause injury.
Toxic and flammable vapors are generated in the sewage system.
Provide ventilation from outside source before removing valves,
covers, drain plugs, hoses, and fittings. Avoid open flames and
prolonged breathing of fumes.
Use extreme care when breaking system connections. Escaping
pressure and/or fluids could cause injury.
Clean up spills immediately with disinfectant. Spills create
an unsafe working area.
After contact with sewage contaminated equipment, clean yourself
with disinfectant soap before performing hand-to-mouth functions
such as eating, drinking, smoking, etc.
Refer to paragraph 3-228 for procedures.