05000335/FIN-2009006-06
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Finding | |
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| Title | Failure to Identify and Correct a Condition Adverse to Quality such that Non-Safety Related system Could Cause a Common Mode Failure of Both Trains of a Safety-Related System |
| Description | The team identified an AV of 10 CFR 50, Appendix B, Criterion XVI, Corrective Action, for the licensees failure to implement adequate corrective actions associated with the CCW air intrusion event that occurred in October, 2008. The corrective actions were inadequate in that the licensee failed to identify and correct the cause of air intrusion. The issue was entered in the licensees corrective action program as CR 2009-25209 to address the ineffective corrective actions for the air intrusion event. Licensee corrective actions included isolating the CCW system from the containment IA compressors. The finding was determined to be more than minor because it affected the availability, reliability and capability of a safety system to perform its intended safety function. Specifically, without knowing the leak path from the containment IA compressors to the CCW system, the licensee could not ensure that adequate cooling would be available or maintained to essential equipment used to mitigate design bases accidents. The finding was assessed for significance in accordance with NRC Manual Chapter 0609, using the Phase I and Phase II SDP worksheets for mitigating systems. It was determined that a Phase III analysis was required since this finding represented a loss of safety system function for multiple trains which was not addressed by the Phase II pre-solved tables/worksheets. Based on the Phase III SDP, the finding was preliminarily determined to be greater than Green. This finding was determined to have a cross-cutting aspect in the area of Human Performance, Decision Making, specifically H.1(a) |
| Site: | Saint Lucie  |
|---|---|
| Report | IR 05000335/2009006 Section 4OA5 |
| Date counted | Sep 30, 2009 (2009Q3) |
| Type: | Violation: Yellow |
| cornerstone | Mitigating Systems |
| Identified by: | NRC identified |
| Inspection Procedure: | |
| Inspectors (proximate) | B Desai C Even J Hamman L Slack M Shylamberg N Greca R Moore R Taylor S Roseb Desaij Hamman M Shylamberg N Greca R Moore R Taylor S Rose |
| CCA | H.13, Consistent Process |
| INPO aspect | DM.1 |
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Finding - Saint Lucie - IR 05000335/2009006 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Saint Lucie) @ 2009Q3
Self-Identified List (Saint Lucie)
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