05000269/FIN-2011017-03
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Finding | |
|---|---|
| Title | Failure to Perform an Adequate Operability Evaluation for the SSF |
| Description | An NRC-identified potentially greater than Green apparent violation of 10 CFR 50, Appendix B, Criterion V, Instructions, Procedures, and Drawings, was identified when the licensee failed to perform a 50.59 evaluation for a compensatory measure for the Standby Shutdown Facility Auxiliary Service Water subsystem in accordance with NSD 203, Operability/Functionality. The failure to perform a 50.59 evaluation of a compensatory measure in accordance with NSD 203 was a performance deficiency. This PD was more than minor because it was associated with the Procedure Quality attribute of the Mitigating Systems Cornerstone and adversely affects the cornerstone objective in that the revised guidance in AP/0/A/1700/025 could not be used as a compensatory measure to support the SSF as operable but degraded/nonconforming without prior NRC review and approval. A Phase III analysis was required because the finding involved the loss or degradation of equipment designed to mitigate external initiating events. The PD directly involved the cross cutting aspect of using conservative assumptions in decision making in the Decision- Making component of the Human Performance cross cutting area in that the licensee relied on an unapproved analysis method to support a compensatory measure. |
| Site: | Oconee  |
|---|---|
| Report | IR 05000269/2011017 Section 4OA5 |
| Date counted | Sep 30, 2011 (2011Q3) |
| Type: | Other: |
| cornerstone | Mitigating Systems |
| Identified by: | NRC identified |
| Inspection Procedure: | IP 93812 |
| Inspectors (proximate) | B Parks G Hutto J Austin K Ellis M Riches S Walkera Sabischr Bernhard R Croteau |
| CCA | H.14, Conservative Bias |
| INPO aspect | DM.2 |
| ' | |
Finding - Oconee - IR 05000269/2011017 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Oconee) @ 2011Q3
Self-Identified List (Oconee)
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