05000445/FIN-2015002-06
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Finding | |
|---|---|
| Title | Licensee-Identified Violation |
| Description | Title 10 CFR 50.65(a)(3) requires, in part, that performance and condition monitoring activities and associated goals shall be evaluated every refueling cycle and that adjustments should be made to ensure that the objective of minimizing failures is appropriately balanced against the objective of minimizing unavailability. Contrary to the above, on July 11, 2013, the licensee evaluated performance and condition monitoring activities and failed to make necessary adjustments to performance monitoring criteria. Specifically, the licensee had implemented a revision to the plant probabilistic risk analysis in 2012. This revision resulted in changes to reliability and availability assumptions that were identified as needing to be incorporated into the maintenance rule performance criteria for several risk significant systems. The licensee did not implement these changes in a timely manner, and failed to recognize that during the periodic assessment completed on July 11, 2013. In 2014, the licensee hired a new maintenance rule coordinator, who recognized the failure to incorporate the risk analysis recommendations and took action to review the affected performance criteria. The violation is more than minor because it affected the equipment performance attribute of the Mitigating Systems Cornerstone and impacted the cornerstone objective to ensure the availability, reliability, and capability of systems that respond to initiating events to prevent undesirable consequences. Using Inspection Manual Chapter 0609, Attachment 04, Initial Characterization of Findings, and Inspection Manual Chapter 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 (Green) because the finding was not a deficiency affecting the design or qualification of a mitigating SSC, and the SSCs maintained their operability. The violation was entered into the licensees corrective action program as CR 2015-005304. |
| Site: | Comanche Peak  |
|---|---|
| Report | IR 05000445/2015002 Section 4OA7 |
| Date counted | Jun 30, 2015 (2015Q2) |
| Type: | NCV: Green |
| cornerstone | Mitigating Systems |
| Identified by: | Licensee-identified |
| Inspection Procedure: | |
| Inspectors (proximate) | C Cowdrey E Schrader G Guerra J Josey J Kirkland J Larsen M Bloodgood M Williams P Elkmann R Kumana T Farina T Hipschman |
| Violation of: | 10 CFR 50.65(a)(3) 10 CFR 50.65 |
| INPO aspect | |
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Finding - Comanche Peak - IR 05000445/2015002 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Comanche Peak) @ 2015Q2
Self-Identified List (Comanche Peak)
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