05000333/FIN-2013007-02
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Finding | |
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| Title | |
| Description | The team identified a finding of very low safety significance (Green) involving a non-cited violation of 10 CFR Part 50, Appendix B, Criterion III, Design Control, because Entergy had not verified the adequacy of the existing design analyses for the available net positive suction head (NPSH) to the EDG fuel oil transfer pumps. Specifically, the team identified several non-conservative design assumptions indicating that Entergy did not adequately account for NPSH in their calculation for the 7-day onsite supply of fuel oil to the EDGs. Entergy performed an operability evaluation, implemented appropriate compensatory measures, and entered the issue into their corrective action program to evaluate and resolve the design deficiency. The performance deficiency was determined to be more than minor because it was similar to Example 3.j of NRC IMC 0612, Appendix E, and was associated with the Design Control attribute of the Mitigating Systems Cornerstone and adversely affected the cornerstone objective of ensuring the availability, reliability, and capability of systems that respond to initiating events to prevent undesirable consequences. The team evaluated the finding in accordance with IMC 0609, Appendix A, The Significance Determination Process (SDP) for Findings at Power, Exhibit 2 Mitigating Systems screening questions. The finding was determined to be of very low safety significance because it was a design deficiency confirmed not to result in a loss of operability. This finding was not assigned a cross-cutting aspect because it was a historical design issue not indicative of current performance. Specifically, the performance deficiency had occurred outside of the nominal three year period for evaluating present performance as defined in IMC 0612. |
| Site: | FitzPatrick  |
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| Report | IR 05000333/2013007 Section 1R21 |
| Date counted | Sep 30, 2013 (2013Q3) |
| Type: | NCV: Green |
| cornerstone | Mitigating Systems |
| Identified by: | NRC identified |
| Inspection Procedure: | IP 71111.21 |
| Inspectors (proximate) | J Schoppy J Chiloyan M Yeminy S Chaudhary P Krohn J Patel |
| Violation of: | 10 CFR 50 Appendix B Criterion III, Design Control |
| INPO aspect | |
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Finding - FitzPatrick - IR 05000333/2013007 | |||||||||||||||||||||||||||||||||||||||||||||
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Finding List (FitzPatrick) @ 2013Q3
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