05000397/FIN-2010005-02
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Finding | |
|---|---|
| Title | Failure to Include Appropriate Acceptance Criteria |
| Description | The inspectors identified a noncited violation of 10 CFR Part 50, Appendix B, Criterion V, Instructions, Procedures, and Drawings, for the licensees failure to include acceptance criteria appropriate to the circumstance in surveillance testing procedures for the 125Vdc battery system. Specifically, licensee personnel listed a non-conservative inter-tier resistance value as acceptance criteria which led to a degraded condition being unanalyzed for 3 years. The licensee has revised the procedure to include the appropriate acceptance criteria for the 125Vdc battery system. This issue has been placed in the licensees corrective action program as Action Request/Condition Report 231971. The performance deficiency is more than minor because it affects the equipment performance attribute of the mitigating systems cornerstone for ensuring the reliability of systems that respond to initiating events. Using Inspection Manual Chapter 0609.04, Phase 1 Initial Screening and Characterization of Findings, the inspectors determined that this performance deficiency was of very low safety significance because the finding was confirmed to not result in a loss of operability for the 125Vdc batteries. The inspectors determined a cross cutting aspect was not applicable to the finding due to the procedure change which implemented the new acceptance criteria occurring in 2007, and determined this not to be representative of current licensee performance (Section 1R19). |
| Site: | Columbia  |
|---|---|
| Report | IR 05000397/2010005 Section 1R19 |
| Date counted | Dec 31, 2010 (2010Q4) |
| Type: | NCV: Green |
| cornerstone | Mitigating Systems |
| Identified by: | NRC identified |
| Inspection Procedure: | IP 71111.19 |
| Inspectors (proximate) | R Cohen W Walker M Hayes |
| INPO aspect | |
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Finding - Columbia - IR 05000397/2010005 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Columbia) @ 2010Q4
Self-Identified List (Columbia)
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