05000366/FIN-2015007-01
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Finding | |
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Title | Failure to Perform Adequate Circuit Breaker As-Found Testing |
Description | The NRC identified a Non-cited Violation of 10 CFR Part 50, Appendix B, Criterion XI Test Control, for the failure to perform circuit breaker as-found electromechanical testing prior to inspecting, cleaning, and lubricating the mechanical components. The licensee planned to revise the test procedures to correct the deficiencies, and entered this violation into their Corrective Action Program as Condition Reports 10137545 and 10126677. The performance deficiency was determined to be more than minor because it was associated with the Equipment Performance attribute of the Mitigating Systems Cornerstone, and adversely affected the cornerstone objective, in that inadequate periodic testing to detect deterioration toward an unacceptable condition, the likelihood that these breakers could unpredictably fail when called upon increases with time in service. The finding was determined to be of very low safety significance (Green) because it was a deficiency affecting the design or qualification of a mitigating structure, system, or component (SSC), and the SSC maintained its operability or functionality. This finding was not assigned a cross-cutting aspect because the issue did not reflect current licensee performance |
Site: | Hatch ![]() |
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Report | IR 05000366/2015007 Section 1R21 |
Date counted | Dec 31, 2015 (2015Q4) |
Type: | NCV: Green |
cornerstone | Mitigating Systems |
Identified by: | NRC identified |
Inspection Procedure: | IP 71111.21 |
Inspectors (proximate) | C Baron G Nicely J Bartley M Riley S Herrick T Fanelli |
Violation of: | 10 CFR 50 Appendix B Criterion XI |
INPO aspect | |
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Finding - Hatch - IR 05000366/2015007 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Hatch) @ 2015Q4
Self-Identified List (Hatch)
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