05000247/FIN-2012004-01
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Finding | |
|---|---|
| Title | Inadequate Operability Evaluation of Non-conforming Safety Related Batteries |
| Description | The inspectors identified a Green NCV of 10 CFR 50, Appendix B, Criterion V, Instructions, Procedures, and Drawings, because Entergy personnel did not adequately implement procedure EN-OP-104, Operability Determination Process, Section 5.1, to assess the operability of safety related station batteries on June 4, 2012. Specifically, Entergy personnel did not appropriately determine the impact on operability as a result of inadequate surveillance testing of the 21, 22 and 24 station batteries. Entergy staff re-performed the operability determination, identified the issues as nonconforming and implemented compensatory measures. Entergy entered this issue into the CAP as CR-IP2-2012-4009. This finding is more than minor because it is associated with the equipment performance attribute of the Mitigating Systems cornerstone and affected the cornerstone objective to ensure the reliability and capability of systems that respond to initiating events to prevent undesirable consequences. Specifically, after inspectors questioned the operability determination, the non-conforming condition was identified and resulted in the station batteries being declared operable with required compensatory measures, revising calculations and implementing a modification to reduce battery load. Using IMC 0609, Appendix A, The Significance Determination Process for Findings At-Power, the inspectors determined this finding was of very low safety significance (Green) because it was not a design or qualification deficiency, did not represent a loss of system safety function, and did not screen as potentially risk significant due to a seismic, flooding, or severe weather initiating event. The finding had a cross-cutting aspect in the area of human performance with the Decision Making attribute because Entergy personnel did not use conservative assumptions in decision making with regards to the non-conservative testing of safety related batteries and adopt a requirement to demonstrate that the proposed action is safe in order to proceed rather than a requirement to demonstrate it is unsafe in order to disapprove the action. |
| Site: | Indian Point  |
|---|---|
| Report | IR 05000247/2012004 Section 1R15 |
| Date counted | Sep 30, 2012 (2012Q3) |
| Type: | NCV: Green |
| cornerstone | Mitigating Systems |
| Identified by: | NRC identified |
| Inspection Procedure: | IP 71111.15 |
| Inspectors (proximate) | C Crisden H Gray J Furia L Scholl M Gray O Ayegbusi R Montgomery S Mccarver T O'Hara |
| CCA | H.14, Conservative Bias |
| INPO aspect | DM.2 |
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Finding - Indian Point - IR 05000247/2012004 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Indian Point) @ 2012Q3
Self-Identified List (Indian Point)
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