05000528/FIN-2010005-06
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Finding | |
|---|---|
| Title | Licensee-Identified Violation |
| Description | Title 10 CFR Part 50, Appendix B, Criterion XVI, Corrective Action, states, in part, that measures shall be established to assure that conditions adverse to quality are promptly identified and corrected. In the case of significant conditions adverse to quality, the measures shall assure that the cause of the condition is determined and corrective action taken to preclude repetition. Contrary to the above, on October 6, 2010, the licensee did not preclude repetition of the failure of valve 3SI-V-0672 to fully open. A licensee valve services technician heard an unexpected noise when stroking open containment spray valve 3JSI-V-0672 and the attempt to open the valve was aborted. Subsequent inspection of the valve body and internals revealed that previous corrective actions implemented between April 16, 2009 and May 18, 2009 had been inadequate to prevent recurrence of the valves failure to fully open. This finding was entered into the licensees corrective action program as PVAR 3548317. This finding is of very low safety significance because it did not result in a loss of safety function, and actual loss of safety function of a single train for greater than it technical specification allowed outage time, or screen as potentially risk significant due to seismic, flooding, or severe weather initiating event. |
| Site: | Palo Verde  |
|---|---|
| Report | IR 05000528/2010005 Section 4OA7 |
| Date counted | Dec 31, 2010 (2010Q4) |
| Type: | NCV: Green |
| cornerstone | Mitigating Systems |
| Identified by: | Licensee-identified |
| Inspection Procedure: | |
| Inspectors (proximate) | K Clayton R Lantz C Smith S Graves M Young J Mateychick B Larson J Bashore M Baquera B Rice T Buchanan D Reinert |
| INPO aspect | |
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Finding - Palo Verde - IR 05000528/2010005 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Palo Verde) @ 2010Q4
Self-Identified List (Palo Verde)
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