05000445/FIN-2013008-01
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Finding | |
|---|---|
| Title | Failure to Perform Cause Evaluations for Maintenance Preventable Functional Failures |
| Description | The team identified a Green finding for a failure to follow procedures that required the licensee to perform cause evaluations for maintenance preventable functional failures (MPFFs). Two MPFFs were not evaluated for their causes because a condition report was not generated to perform the evaluation. After identification of this performance deficiency, the licensee generated condition reports to evaluate the two MPFFs for causes. The licensees failure to ensure that cause evaluations were performed for MPFFs as required by procedure was a performance deficiency. This constituted a programmatic weakness in the licensees maintenance rule program and corrective action program and resulted in MPFFs not being prioritized and evaluated appropriately for corrective action, which could result in recurring failures. The affected systems crossed the Initiating Events, Mitigating Systems, and Emergency Preparedness cornerstones, but because the performance deficiency was associated with a programmatic weakness of the maintenance rule program, the inspectors determined that the Mitigating Systems cornerstone was the most affected. The finding was more than minor because it adversely affected 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 Significance Determination Process for Findings At Power, 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 did not represent a loss of system or function. The finding has a human performance cross-cutting aspect associated with work practices in that licensee supervision failed to define expectations regarding compliance with the maintenance rule and corrective action program procedures. |
| Site: | Comanche Peak  |
|---|---|
| Report | IR 05000445/2013008 Section 4OA2 |
| Date counted | Dec 31, 2013 (2013Q4) |
| Type: | Finding: Green |
| cornerstone | Mitigating Systems |
| Identified by: | NRC identified |
| Inspection Procedure: | IP 71152 |
| Inspectors (proximate) | C Alldredge E Ruesch R Kellar R Kumana S Alferink |
| CCA | H.8, Procedure Adherence |
| INPO aspect | WP.4 |
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Finding - Comanche Peak - IR 05000445/2013008 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Comanche Peak) @ 2013Q4
Self-Identified List (Comanche Peak)
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