05000269/FIN-2011008-01
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Finding | |
|---|---|
| Title | Failure to Promptly Identify and Correct a Condition Adverse to Quality Involving the Environmental Qualification of Limitorque Valve Actuators |
| Description | The NRC identified a non-escalated cited violation of 10 CFR 50, Appendix B, Criterion XVI, Corrective Action for the licensees failure to promptly identify and correct a condition adverse to quality in Units 1, 2, and 3, which resulted in failure to restore compliance with 10 CFR 50.49(f). The condition adverse to quality involved the installation of Limitorque valve actuators in a configuration that was not supported by the vendors environmental qualification (EQ) testing or engineering analysis. The licensee implemented immediate actions to address the functionality concern on the affected valves by installing drains to prevent excessive accumulation of condensate that could impact the valves safety function. This finding is more than minor because it is associated with the equipment performance attribute of the Mitigating Systems Cornerstone and adversely affects the cornerstone objective of ensuring the availability, reliability, and capability of systems that respond to initiating events to prevent undesirable consequences (i.e. core damage). Specifically, the licensee failed to promptly address an EQ non-conforming condition to ensure the availability, reliability, and capability of five LPI system valves in Unit 1 and Unit 3 that are credited for the mitigation of initiating events. The inspectors used Inspector Manual Chapter 0609, Significance Determination Process, Attachment 4, Phase 1, to evaluate the significance of this finding and determined that it was of very low safety significance (Green) because the finding was a qualification deficiency confirmed not to result on loss of operability or functionality. The performance deficiency was directly related to the crosscutting area of Problem Identification of Resolution under the Problem Evaluation aspect of the Corrective Action Program component because the licensee did not thoroughly evaluate the problem which resulted in the failure to promptly identify and correct a condition adverse to quality. |
| Site: | Oconee  |
|---|---|
| Report | IR 05000269/2011008 Section 4OA2 |
| Date counted | Dec 31, 2011 (2011Q4) |
| Type: | Violation: Green |
| cornerstone | Mitigating Systems |
| Identified by: | NRC identified |
| Inspection Procedure: | IP 71152 |
| Inspectors (proximate) | A Sabisch C Fletcher G Ottenberg J Hamman J Rivera Ortiz K Ellis K Miller R Croteaua Vargas Mendezg Ottenberg J Bartley K Ellis M Endress M Meeks R Carrion A Sengupta |
| CCA | P.2, Evaluation |
| INPO aspect | PI.2 |
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Finding - Oconee - IR 05000269/2011008 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Oconee) @ 2011Q4
Self-Identified List (Oconee)
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