05000286/FIN-2010004-01
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Finding | |
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| Title | Inadequate Identification and Correction of a Condition Adverse to Quality to Ensure the Continued Availability of the Safety-Related No. 31 Static Inverter |
| Description | A self-revealing, non-cited violation (NCV) of very low safety significance (Green) of 10 CFR 50, Appendix B, Criterion XVI, Corrective Actions, was identified because Entergy personnel did not adequately identify and correct a condition adverse to quality to ensure the continued availability of the safety related 31 static inverter. Specifically, Entergy personnel did not complete previously-identified corrective actions to ensure capacitors in critical components of the inverter were identified and replaced in a timely manner prior to the occurrence of age-related failures. Entergy personnel determined that degraded commutation capacitors were the cause of a fuse failure on September 14, 2010, and were identified to be 13 years old and installed significantly longer than the nine years recommended by the vendor. Entergy personnel entered the issue into the corrective action program and replaced the capacitor. The finding was more than minor because the finding was associated with the Mitigating Systems cornerstone attribute of equipment performance and affected the cornerstone objective of ensuring the availability and reliability of systems that respond to initiating events to prevent undesirable consequences. Specifically, the 31 static inverter incurred unnecessary unavailability hours and was inoperable and unavailable for approximately five days following the fuse failure on September 14,2010. The inspectors determined the finding was of very low safety significance (Green) because the finding was not a design or qualification deficiency, did not represent a loss of system safety function, and was not risk significant with respect to external events. The inspectors determined that this finding had a cross-cutting aspect in the area of Problem Identification and Resolution because Entergy personnel did not complete adequate and timely corrective actions to implement a capacitor program and identify critical capacitors for replacement prior to a failure that resulted in the unavailability of a safety related inverter. |
| Site: | Indian Point  |
|---|---|
| Report | IR 05000286/2010004 Section 1R12 |
| Date counted | Sep 30, 2010 (2010Q3) |
| Type: | NCV: Green |
| cornerstone | Mitigating Systems |
| Identified by: | Self-revealing |
| Inspection Procedure: | IP 71111.12 |
| Inspectors (proximate) | H Gray J Kulp M Gray M Halter P Cataldo S Mccarver |
| CCA | P.3, Resolution |
| INPO aspect | PI.3 |
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Finding - Indian Point - IR 05000286/2010004 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Indian Point) @ 2010Q3
Self-Identified List (Indian Point)
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