05000315/FIN-2015008-02
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Finding | |
|---|---|
| Title | Failure to Verify the Acceptability of the Surveillance Acceptance Limits for CRID Inverter Operability |
| Description | The team identified a finding of very low safety significance (Green), and an associated NCV of 10 CFR Part 50, Appendix B, Criterion III, Design Control, for the failure to verify the adequacy of the surveillance acceptance limits for control room instrumentation distribution (CRID) inverter operability. Specifically, the licensee did not verify the CRID inverter acceptance limits included in the applicable Technical Specification (TS) Surveillance Requirement procedures were adequate to demonstrate CRID operability. The licensee captured this issue in their CAP as AR 2015-14430 and AR 2015-14607, and established a compensatory action to impose more restrictive acceptance limits. The performance deficiency was determined to be more than minor because it was associated with the equipment performance attribute of the Mitigating System cornerstone and affected the cornerstone objective of ensuring the availability, reliability, and capability of systems that respond to initiating events to prevent undesirable consequences. The finding screened as of very low safety significance (Green) because it did not result in the loss of operability or functionality of mitigating systems. Specifically, the licensee reviewed the affected surveillance results for the last 12 months and reasonably determined operability was maintained because the results were within the vendor specifications. The team did not identify a cross-cutting aspect associated with this finding because it was not confirmed to reflect current performance due to the age of the performance deficiency. |
| Site: | Cook  |
|---|---|
| Report | IR 05000315/2015008 Section 1R21 |
| Date counted | Dec 31, 2015 (2015Q4) |
| Type: | NCV: Green |
| cornerstone | Mitigating Systems |
| Identified by: | NRC identified |
| Inspection Procedure: | IP 71111.21M |
| Inspectors (proximate) | A Dunlop B Parks C Baron C Lipa L Smith M Jeffers N Feliz-Adorno R Walton S Kobylarz |
| Violation of: | Technical Specification - Procedures 10 CFR 50 Appendix B Criterion III, Design Control Technical Specification |
| INPO aspect | |
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Finding - Cook - IR 05000315/2015008 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Cook) @ 2015Q4
Self-Identified List (Cook)
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