05000482/FIN-2012007-07
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Finding | |
|---|---|
| Title | Failure to Prevent Recurrence of Component Cooling Water System Voiding |
| Description | On February 23, 2011, a non-cited violation of 10 CFR Part 50, Appendix B, Criterion XVI, Corrective Action, was revealed when an anomalous start of component cooling water pump B indicated gas voiding in the component cooling water piping. This violation was due to the licensees inadequate root cause evaluation and failure to prevent recurrence of the voiding that had previously occurred in May 2010. The licensee entered this finding in its corrective action program as condition report 33925. The failure to properly identify design issues as a root cause and to take action to prevent the recurrence of a component cooling water system voiding was a performance deficiency. The performance deficiency is more than minor because it impacted the equipment performance attribute of the mitigating systems cornerstone objective to ensure the availability, reliability, and capability of systems that respond to initiating events to prevent undesirable consequences. Specifically, excessive voiding of the component cooling water system could lead to lack of cooling to important safety-related components. Using Manual Chapter 0609.04, Phase 1 - Initial Screening and Characterization of Findings, the team determined that the issue was of very low safety significance (Green) because it did not represent a loss of system safety function or loss of a single train longer than its technical specification allowed outage time. This finding has a cross-cutting aspect in the corrective action program component of the problem identification and resolution cross-cutting area because the licensee failed to thoroughly evaluate a problem such that its resolution addressed its cause and extent of condition. Specifically, condition report 25918 did not properly identify design issues as a root cause requiring immediate system modifications to preclude recurrence |
| Site: | Wolf Creek  |
|---|---|
| Report | IR 05000482/2012007 Section 4OA2 |
| Date counted | Jun 30, 2012 (2012Q2) |
| Type: | NCV: Green |
| cornerstone | Mitigating Systems |
| Identified by: | Self-revealing |
| Inspection Procedure: | IP 71152 |
| Inspectors (proximate) | C Peabody D Powers K Martin L Willoughby M Williams S Makor T Farina |
| CCA | P.2, Evaluation |
| INPO aspect | PI.2 |
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Finding - Wolf Creek - IR 05000482/2012007 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Wolf Creek) @ 2012Q2
Self-Identified List (Wolf Creek)
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