05000285/FIN-2014005-01
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Finding | |
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| Description | The inspectors identified an NCV of very low safety significance of 10 CFR 50.65 paragraph (a)(2) Requirements for Monitoring the Effectiveness of Maintenance of Nuclear Power Plants, because the licensee did not demonstrate that performance of a component was being effectively controlled through appropriate preventive maintenance, and did not monitor the performance of the component against licensee-established goals to provide reasonable assurance that the component was capable of fulfilling its intended function. Specifically, the licensee failed to demonstrate that the performance of raw water system valve HCV-2875A was being effectively controlled through appropriate preventive maintenance and failed to monitor the valves performance against licensee established goals when performance criteria were exceeded. Corrective actions taken for this violation included revising the Maintenance Rule performance criteria assessment for this component, classifying the component as 10 CFR 50.65 (a)(1), and specifying goals, corrective actions, and additional monitoring for the component. The licensees failure to demonstrate component performance through appropriate preventive maintenance, and the failure to identify that system performance criteria had been exceeded, and as a result, the failure to perform an evaluation of the system for 50.65 (a)(1) goals, corrective actions, and monitoring, was a performance deficiency within the licensees ability to foresee and correct. The finding is more than minor because it is associated with the Equipment Performance attribute of the Mitigating Systems cornerstone and adversely affected the Cornerstone objective to ensure the reliability of systems that respond to initiating events to prevent undesirable consequences. Specifically, the failure to identify that valve HCV-2875A performance criteria had been exceeded resulted in a delayed assessment of this component and additional failures occurred in the intervening timeframe which adversely affected the overall reliability of the raw water system. The inspectors screened the finding in accordance with NRC IMC 0609, Appendix A, the Significance Determination Process (SDP) for Findings at Power. Using IMC 0609, Appendix A, Exhibit 2, Mitigating Systems Screening Questions, dated July 1, 2012, this finding is of very low safety significance (Green) because it: (1) was not a deficiency affecting the design or qualification of a mitigating system (2) did not represent a loss of system and/or function, (3) did not represent an actual loss of function of at least a single train or two separate safety systems out-of-service for greater than its TS allowed outage time; and (4) does not represent an actual loss of function of one or more non-technical specification trains of equipment designated as high safety-significant in accordance with the licensees maintenance rule program for greater than 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />. This finding has a cross-cutting aspect in the area of Problem Identification and Resolution and the Evaluation aspect because the licensee failed to appropriately evaluate the preventive maintenance for valve HCV-2875A to demonstrate component performance and failed to correctly evaluate a functional failure against system performance criteria to ensure system goals, corrective actions, and monitoring were identified. |
| Site: | Fort Calhoun  |
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| Report | IR 05000285/2014005 Section 1R12 |
| Date counted | Dec 31, 2014 (2014Q4) |
| Type: | NCV: Green |
| cornerstone | Mitigating Systems |
| Identified by: | NRC identified |
| Inspection Procedure: | IP 71111.12 |
| Inspectors (proximate) | B Hagar C Roque -Cruz F Thomas M Hay P Elkmann R Azua S Hedger S Schneider T Buchana |
| Violation of: | 10 CFR 50.65(a)(1) 10 CFR 50.65 Technical Specification |
| CCA | P.2, Evaluation |
| INPO aspect | PI.2 |
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Finding List (Fort Calhoun) @ 2014Q4
Self-Identified List (Fort Calhoun)
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