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Appendix C: Selected Maintenance Activities and Post Maintenance Tests
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Guideline to Good Practices For Postmaintenance Testing at DOE Nuclear Facilities
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Appendix C: Selected Maintenance Activities and Post Maintenance Tests - Continued - std10650029


DOE-STD-1065-94
Appendix C
SELECTED MAINTENANCE ACTIVITIES AND POSTMAINTENANCE TESTS
Maintenance Activity
Recommended Test
Adjust packing of or repack
air-operated or motor-
operated valve (MOV).
1.
Using air or motor operator, verify full stroke
of valve to ensure freedom of movement.
(NOTE: Valve stroke required may be
different from operative capability).
2.
Perform stroke timing test.
3.
Check running current on motor. (If running
check has increased by more than 8 percent of
the baseline value, evaluate the need to
perform diagnostic testing of the valve).
4.
Check for leakage at normal operating
pressure.
5.
Perform leak rate test if required.
Repair internals of air-
operated or motor-operated
valve.
1.
Leak-test valve if required by technical safety
specifications or surveillance procedures.
2.
Perform retesting required for adjusting
packing.
3.
Verify position indications (remote and local).
4.
Grease/lubricate MOV.
Repack manual valve or adjust
packing.
1.
Verify that valve stem moves freely without
binding.
2.
Check for leakage at operating pressure.
C-3


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