05000331/FIN-2009007-01
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Finding | |
|---|---|
| Title | Failure to promptly identify and evaluate the degraded condition associated with the D RWS pump mounting base bolted connectors |
| Description | A finding of very low safety significance and associated non-cited violation of 10 CFR Part 50, Appendix B, Criterion XVI, Corrective Action, was identified by the inspectors for a failure of the licensee to promptly identify and correct a condition adverse to quality (CAQ) associated with the D river water supply (RWS) pump mounting base bolted connectors. The licensees failure to evaluate the operability of the D RWS pump due to the degraded bolting was considered a performance deficiency. By not examining the thread degradation documented on the overtorqued D RWS pump mounting base bolted connectors, the licensee was unable to adequately identify the as-left condition of the stud threads, evaluate the impact that condition had on the seismic qualification of the pump, and implement appropriate corrective actions to resolve the degraded condition. The failure to promptly identify and correct a CAQ associated with the safety-related D RWS pump was a violation of NRC requirements specified in 10 CFR Part 50, Appendix B, Criterion XVI, Corrective Action. The licensee entered this issue into the Corrective Action Program (CAP Item 067412), examined the pump mounting connectors, and initiated a prompt operability determination to evaluate the seismic qualification. Based on this evaluation, the D RWS pump was declared Operable but degraded. The performance deficiency was determined to be more than minor because the issue was associated with the Mitigating Systems cornerstone attribute of equipment performance and affected the cornerstone objective of ensuring the availability, reliability, and capability of systems that respond to initiating events to prevent undesirable consequences. The inspectors evaluated this finding using the Significance Determination Process (SDP) and determined the finding was of very low safety significance (Green) because this finding was a design or qualification deficiency that did not result in a loss of operability of the safety component. The inspectors also determined that this finding had a cross-cutting aspect in the area of Problem Identification and Resolution, Corrective Action Program, because the licensee did not promptly and completely identify an adverse condition in the CAP in a timely manner commensurate with its safety significance. P.1(a). |
| Site: | Duane Arnold  |
|---|---|
| Report | IR 05000331/2009007 Section 4OA2 |
| Date counted | Jun 30, 2009 (2009Q2) |
| Type: | NCV: Green |
| cornerstone | Mitigating Systems |
| Identified by: | NRC identified |
| Inspection Procedure: | IP 71152 |
| Inspectors (proximate) | N Shah K Riemer J Jacobson R Baker R Clagg |
| CCA | P.1, Identification |
| INPO aspect | PI.1 |
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Finding - Duane Arnold - IR 05000331/2009007 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Duane Arnold) @ 2009Q2
Self-Identified List (Duane Arnold)
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