05000269/FIN-2011002-02
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Finding | |
|---|---|
| Title | Inadequate Post Modification Testing to Ensure SSF DG Functionality |
| Description | An NRC-identified Apparent Violation of 10 CFR 50, Appendix B, Criterion III, Design Control, was identified for the licensees failure to ensure that a modification installed on the Safe Shutdown Facility (SSF) Diesel Generator (DG) monitoring panel would not affect the ability of the SSF Power subsystem to perform its design function. The finding does not represent an immediate safety concern because the chart recorder was modified so that it did not send an output signal to the SSF control and protection logic circuit. The licensees failure to ensure the post-modification testing was adequate to verify the modification did not affect the SSF Power subsystems ability to perform its design function was a performance deficiency (PD). The PD was determined to be more than minor because it was associated with the Mitigating Systems Cornerstone attribute of Equipment Performance and adversely impacted the cornerstone objective in that the modification would have prevented the SSF DG from starting and supplying power to the SSF. The safety significance of this finding was To Be Determined pending completion of a Phase III risk analysis. The finding was directly related to the cross-cutting area of Human Performance under the Procedural Compliance aspect of the Work Practices component because the licensee failed to ensure station modification program requirements were followed in the development of post-modification testing. |
| Site: | Oconee  |
|---|---|
| Report | IR 05000269/2011002 Section 1R18 |
| Date counted | Mar 31, 2011 (2011Q1) |
| Type: | NCV: Green |
| cornerstone | Mitigating Systems |
| Identified by: | NRC identified |
| Inspection Procedure: | IP 71111.18 |
| Inspectors (proximate) | A Sabisch A Vargas B Collins C Rapp G Ottenberg J Bartley J Hamman K Ellis R Carriona Sabische Lea G Crespo G Johnson G Ottenberg J Bartley J Hamman K Ellis P Higgins |
| CCA | H.8, Procedure Adherence |
| INPO aspect | WP.4 |
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Finding - Oconee - IR 05000269/2011002 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Oconee) @ 2011Q1
Self-Identified List (Oconee)
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