05000259/FIN-2013011-12
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Finding | |
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Title | Deficient Acceptance Criteria for Main Battery Bank 1 |
Description | The team identified a Green NCV of 10 CFR 50, Appendix B, Criterion V, Instructions, Procedures and Drawings, for the licensees failure to incorporate appropriate quantitative acceptance criteria into a station battery inspection Procedure. Specifically, Procedure EPI-00248-BAT005, Annual Inspection of 250V DC Main Battery Banks 1, 2, 3 and Associated Chargers, Revisions 18 and 19 did not provide the correct acceptance criteria for the battery bank connection resistance results. Prompt corrective actions included determination that main battery bank 1 remained operable and entry of the issue into the corrective action program (SR 731341 and PER 732511). The team determined that BFNs failure to establish correct quantitative acceptance criteria after main bank battery replacement and after changing the battery inspection methodology in the annual battery test inspection procedure was a performance deficiency. The performance deficiency was determined to be more than minor and a Finding because it was associated with the procedure quality attribute of the Mitigating Systems cornerstone, and adversely affected the cornerstone objective to ensure the availability, reliability, and capability of systems that respond to initiating events to prevent undesirable consequences. The Finding was of very low safety significance (Green) because it was not a design or qualification deficiency and did not result in an actual loss of system and/or function. The Finding had a cross-cutting aspect in the area of Human Performance, Resources - Procedures, because BFN did not provide accurate and up-to-date procedures for the inspection of safety-related station batteries. |
Site: | Browns Ferry ![]() |
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Report | IR 05000259/2013011 Section 4OA4 |
Date counted | Jun 30, 2013 (2013Q2) |
Type: | NCV: Green |
cornerstone | Mitigating Systems |
Identified by: | NRC identified |
Inspection Procedure: | IP 95003 |
Inspectors (proximate) | C Even C Moore E Guthrie J Eargle J Heinly R Skokowski |
Violation of: | 10 CFR 50 Appendix B Criterion V |
CCA | H.7, Documentation |
INPO aspect | WP.3 |
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Finding - Browns Ferry - IR 05000259/2013011 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Browns Ferry) @ 2013Q2
Self-Identified List (Browns Ferry)
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