Quantcast Appendix C: Selected Maintenance Activities and Post Maintenance Tests - Continued - std10650029

 

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Appendix C: Selected Maintenance Activities and Post Maintenance Tests - Continued - std10650028
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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 - std10650030


DOE-STD-1065-94
Appendix C
SELECTED MAINTENANCE ACTIVITIES AND POSTMAINTENANCE TESTS
Maintenance Activity
Recommended Test
Repair (or replace) MOV
1.
Perform full-stroke exercising checks (two
motor-operator
strokes) done at normal system flow,
pressure, temperature.
2.  Test seat leakage.
3.  Perform stroke timing test.
4.  Measure the running and the starting
current of motor.
5.  Verify torque and limit-switch settings.
6.  Test automatic functions.
7.  Check position verification.
8.  Check packing leakage, at operating
pressure.
9.  Greast/lubricate MOV.
10. Perform appropriate diagnostic tests to
establish a new baseline.
Repair (or replace)
1.
Perform full-stroke exercise checks at
air-operated valve.
normal system parameters.
2.
Test seat leakage.
3.
Perform stroke timing test.
4.
Test automatic functions.
5.
Check position verification.
6.
Verify control-valve loop alignment.
7.
Check packing leakage at operating
pressure.
8.
Check positioner and E/P or S/P converter
Repair solenoid valve.
1.
Perform full-stroke exercise checks.
2.
Test seat leakage.
3.
Test automatic functions.
4.
Check position-indication verification.
Repair (or replace)
1.
Perform any code-required strength or
isolation valve
seat-tightness testing.
2.
Perform technical-specification-required
leak-rate and operability testing.
3.
Verify position indication.
C-4


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