05000269/FIN-2010002-02
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Finding | |
|---|---|
| Title | Failure to Promptly Identify and Correct an Adverse Condition Affecting Operability of the Unit 2 and Unit 3 Standby Shutdown Facility |
| Description | An NRC-identified Apparent Violation of 10 CFR 50, Appendix B, Criterion XVI, Corrective Action, was identified for the licensees failure to promptly identify and correct an adverse condition. The licensee failed to identify and correct a degraded condition on Unit 2and Unit 3 SSF letdown lines following the confirmation of blockage in the Unit 1 SSF letdown line in October 2009. This finding does not represent an immediate safety concern because the in-line filters have been removed on all three units. This violation has been entered into the corrective action program as PIP O-10-1213 The licensees failure to promptly identify and correct the degraded condition of the Unit 2and Unit 3 SSF letdown line as required by 10 CFR 50, Appendix B, Criterion XVI was a performance deficiency. The performance deficiency was more than minor because it was associated with the Mitigating Systems Cornerstone attribute of Equipment Performance and adversely impacted the cornerstone objective because the degraded condition had the potential to affect RCS inventory control during an SSF event. The inspectors determined that a Phase III analysis was required because this finding represented a potential loss of function for a single train system which was not addressed by the Phase II pre-solved tables or the plant-specific worksheets. The finding directly involved the cross-cutting area of Human Performance under the Conservative Assumptions and Safe Actions aspect of the Decision Making component, in that the licensee failed to demonstrate conservative decision making in their evaluation of the operability of the Unit 2 and Unit 3 SSF letdown lines |
| Site: | Oconee  |
|---|---|
| Report | IR 05000269/2010002 Section 1R15 |
| Date counted | Mar 31, 2010 (2010Q1) |
| Type: | AV: |
| cornerstone | Mitigating Systems |
| Identified by: | NRC identified |
| Inspection Procedure: | IP 71111.15 |
| Inspectors (proximate) | K Ellis A Sabisch M King G Ottenberg R Chou E Riggsa Sabischk Ellis L Wert W Rogers |
| CCA | H.14, Conservative Bias |
| INPO aspect | DM.2 |
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Finding - Oconee - IR 05000269/2010002 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Oconee) @ 2010Q1
Self-Identified List (Oconee)
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