05000413/FIN-2009002-01
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Finding | |
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| Title | Failure to translate design requirements into a maintenance program to ensure Component Cooling Water system operability was maintained over the design life of the plant (Section 4OA3.1) |
| Description | A self-revealing non-cited violation of 10 CFR Part 50, Appendix B, Criterion III, Design Control, was identified for the failure to translate the design basis for the Component Cooling Water (KC) heat exchanger Nuclear Service Water (RN) outlet control valve and the vendors construction drawings into maintenance procedures to ensure the valve would remain operable over the design lifetime of the component. As a result, the control valve failed and rendered the 1A train of KC inoperable for 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br />. The failed component was replaced and the valve retested satisfactorily. This issue has been entered into the licensees Corrective Action Program as Problem Investigation Process (PIP) report C-09-0546. The finding was determined to be more than minor because it is associated with the Mitigating Systems cornerstone of Design Control. The valve failure caused the 1A train of KC to be inoperable for 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> which impacted the cornerstone objective of ensuring the availability, reliability, and capability of systems that respond to initiating events and prevent undesirable consequences. A Phase 2 evaluation was required because the 1B train was also unavailable due to planned maintenance causing a loss of safety function. The finding was determined to be of very low safety significance (Green) using the Phase 2 Worksheets based on the exposure time of 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br />. This finding was reviewed for crosscutting aspects and none were identified. (Section 4OA3.1) |
| Site: | Catawba  |
|---|---|
| Report | IR 05000413/2009002 Section 4OA3 |
| Date counted | Mar 31, 2009 (2009Q1) |
| Type: | NCV: Green |
| cornerstone | Mitigating Systems |
| Identified by: | Self-revealing |
| Inspection Procedure: | IP 71153 |
| Inspectors (proximate) | B Collins A Vargas J Bartley A Sabisch R Cureton |
| INPO aspect | |
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Finding - Catawba - IR 05000413/2009002 | ||||||||||||||||||||||||||||||
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Finding List (Catawba) @ 2009Q1
Self-Identified List (Catawba)
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