05000334/FIN-2011009-01
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Finding | |
|---|---|
| Title | Failure to Implement Effective Corrective Actions to Prevent Recurrence of Socket Weld Failures |
| Description | The inspectors identified a Green, self-revealing, non-cited violation of 10 CFR 50, Appendix B, Criterion XVI, Corrective Action, in that FENOC failed to take adequate corrective actions to prevent recurrence of a significant condition adverse to quality. Specifically, FENOC\'s extent of condition review and long-term corrective actions following a residual heat removal socket weld failure, caused by vibration-induced high-cycle fatigue, were inadequate to preclude the recurrence of a similar failure on the auxiliary feedwater system. FENOC entered this issue into their corrective action program as condition report 11-01453 for further review. The inspectors determined that FENOC\'s failure to plan or implement adequate corrective actions to prevent recurrence of socket weld failures on safety-related piping was a performance deficiency. This issue was reasonably within FENOC\'s ability to foresee and correct due to previous opportunities to identify and correct socket weld failures on safetyrelated systems at Beaver Valley. The inspectors determined that this self-revealing finding was more than minor because it was associated with the equipment performance attribute of the Mitigating Systems cornerstone and affected the cornerstone objective of ensuring the capability of systems that respond to initiating events to prevent undesirable consequences (Le., core damage). The inspectors evaluated the significance of this finding using IMC 0609.04, Phase 1 - Initial Screening and Characterization of Findings, and determined that this finding was of very low safety significance (Green) because the finding was not a design or qualification deficiency, did not represent a loss of safety system function, and did not screen as potentially risk-significant due to external initiating events. This finding had a cross-cutting aspect in the area of problem identification and resolution because FENOC did not thoroughly evaluate a significant condition adverse to quality such that the resolutions address the extent-of-condition. Specifically, FENOC failed to perform an adequate extent of condition review following the failure of the 1RH-200 socket weld which resulted in not developing adequate corrective actions to address socket welds on the auxiliary feedwater system. |
| Site: | Beaver Valley |
|---|---|
| Report | IR 05000334/2011009 Section 4OA2 |
| Date counted | Sep 30, 2011 (2011Q3) |
| Type: | NCV: Green |
| cornerstone | Mitigating Systems |
| Identified by: | Self-revealing |
| Inspection Procedure: | IP 71152 |
| Inspectors (proximate) | E Dipaolo P Kaufman S Barber E Bonney |
| CCA | P.2, Evaluation |
| INPO aspect | PI.2 |
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Finding - Beaver Valley - IR 05000334/2011009 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Beaver Valley) @ 2011Q3
Self-Identified List (Beaver Valley)
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