05000366/FIN-2015007-05
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Finding | |
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Title | Failure to Classify RCIC Sub-components as Safety-Related |
Description | The NRC identified a Non-cited Violation of 10 CFR Part 50, Appendix B, Criterion III, Design Control, for the failure to classify components in accordance with Regulatory Guide 1.26 as specified by the Unit 2 Updated Final Safety Analysis Report, Section 3.2.2. As an immediate corrective action, the licensee performed an operability evaluation, and determined that the reactor core isolation cooling (RCIC) was operable. In addition, the licensee planned to reclassify the relief valve as safety-related, and entered this issue into their Corrective Action Program as Condition Reports 10132353, 10136685, and 10141965. The performance deficiency was determined to be more than minor because it was associated with the Design Control attribute of the Mitigating Systems Cornerstone, and affected the cornerstone objective, in that inadequate classification of the relief valves affected the reliability of safety-related function of the RCIC system. 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 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 (Section 1R21.2.b.5). |
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 III, Design Control |
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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