05000275/FIN-2014007-02
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Finding | |
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Title | V Inadequate Technical Specification Surveillance Requirement for Emergency Diesel Generators |
Description | The team identified a Green non-cited violation of 10 CFR 50.36 for the licensees failure to establish an appropriate surveillance test to demonstrate operability of its emergency diesel generators. After revising its emergency diesel generator loading analysis, the licensee failed to adjust the parameters for the full-load-reject surveillance to ensure the test was performed with the maximum anticipated electrical loading. After the team identified this violation, the licensee entered Surveillance Requirement 3.0.3 and documented the condition in its corrective action program as SAPNs 50657635 an
50657637. The licensees failure to specify the lowest functional capability or performance level of equipment required for safe operation of the facility as required by 10 CFR 50.36 was a performance deficiency. This performance deficiency was more than minor because it was associated with the equipment performance attribute of the mitigating systems cornerstone objective to ensure the availability, reliability, and capability of systems that respond to initiating events. Using Inspection Manual Chapter 0609, Appendix A, the team determined that this finding was of very low safety significance (Green) because it did not result in the loss of operability or functionality of a system or train. This finding has a resolution crosscutting aspect in the problem identification and resolution cross-cutting area because the licensee failed to take effective corrective actions to address the nonconservative surveillance parameters in a timely manner (P.3). Specifically, the licensee did not take appropriate interim corrective actions to mitigate the issue while more fundamental causes were being assessed. |
Site: | Diablo Canyon ![]() |
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Report | IR 05000275/2014007 Section 4OA2 |
Date counted | Sep 30, 2014 (2014Q3) |
Type: | NCV: Green |
cornerstone | Mitigating Systems |
Identified by: | NRC identified |
Inspection Procedure: | IP 71152 |
Inspectors (proximate) | G Miller M Hayes M Keefe T Hipschman B Anderson C Alldredge E Ruesch |
Violation of: | 10 CFR 50.36 |
CCA | P.3, Resolution |
INPO aspect | PI.3 |
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Finding - Diablo Canyon - IR 05000275/2014007 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Diablo Canyon) @ 2014Q3
Self-Identified List (Diablo Canyon)
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