05000482/FIN-2010008-04
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Finding | |
|---|---|
| Title | Failure to Identify and Correct Inadequate RHR Fill and Vent Procedures |
| Description | Green. The inspectors identified a noncited violation of 10 CFR Part 50, Appendix B, Criterion XVI, Corrective Action, for the failure to promptly identify and take corrective actions to address inadequacies in the residual heat removal system fill and vent procedure. The licensee failed to perform corrective actions to incorporate minimum flow rates required to sweep air out of the residual heat removal heat exchangers into the system fill and vent procedure during performance of revisions incorporating previous operating experience and corrective actions associated with NRC inspections. This finding is more than minor because it affected the Mitigating Systems Cornerstone attribute of design control for ensuring the availability, reliability, and capability of safety systems. Using Manual Chapter 0609.04, Phase 1 - Initial Screening and Characterization of Findings, this finding was determined to be of very low safety significance because the voided heat exchanger was a design or qualification deficiency confirmed not to result in loss of operability. The inspectors determined that the finding has a crosscutting aspect in the area of problem identification and resolution associated with the corrective action component because the licensee staff evaluation of previous Performance Improvement Request 2002 2765 was not thorough enough to result in inclusion of minimum flows necessary to sweep voids out of the residual heat removal heat exchanger. |
| Site: | Wolf Creek  |
|---|---|
| Report | IR 05000482/2010008 Section 4OA5 |
| Date counted | Dec 31, 2010 (2010Q4) |
| Type: | NCV: Green |
| cornerstone | Mitigating Systems |
| Identified by: | NRC identified |
| Inspection Procedure: | IP 93812 |
| Inspectors (proximate) | D Dumbacher M Young M Hay M Bloodgood |
| Violation of: | 10 CFR 50 Appendix B 10 CFR 50 Appendix B Criterion XVI |
| CCA | P.2, Evaluation |
| INPO aspect | PI.2 |
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Finding - Wolf Creek - IR 05000482/2010008 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Wolf Creek) @ 2010Q4
Self-Identified List (Wolf Creek)
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