05000336/FIN-2010005-02
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Finding | |
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| Title | Failure to Take Adequate Corrective Actions For a Broken Jacket Water Banjo Bolt on the 3 B EDG |
| Description | The inspectors identified a Green, NCV of 10 CFR 50, Appendix B, Criterion XVI, Corrective Action, in that, Dominion did not take adequate corrective action following the identification of a degraded condition. Specifically, maintenance personnel identified a broken jacket water fitting (banjo bolt) on the Unit 3, B emergency diesel generator (EDG), but a condition report (CR) was not initiated. Subsequently, an additional similarly degraded fitting resulted in extended unavailability on the Unit 3, B EDG. In response, Dominion entered the issue into the CAP and replaced the broken jacket water fitting. The finding is more than minor because it is associated with the Equipment Performance attribute of the Mitigating Systems cornerstone, and adversely affected the cornerstone objective of ensuring the availability, reliability, and capability of systems that respond to initiating events to prevent undesirable consequences. The inspectors determined the finding was of very low safety significance (Green) because it was not a design or qualification deficiency, did not represent an actual loss of system safety function of a single train for greater than its Technical Specification (TS) allowed outage time, and did not screen as potentially risk significant due to a seismic, flooding, or severe weather initiating event. This finding had a cross-cutting aspect in the Problem Identification and Resolution cross-cutting area, Corrective Action Program component, because Dominion did not ensure that issues potentially impacting nuclear safety were promptly identified, fully evaluated, and that actions were taken to address safety issues in a timely manner, commensurate with their safety significance. Specifically, Dominion did not initiate a CR in September 2009 for a degraded condition on the safety-related Unit 3, B EDG. |
| Site: | Millstone  |
|---|---|
| Report | IR 05000336/2010005 Section 4OA5 |
| Date counted | Dec 31, 2010 (2010Q4) |
| Type: | NCV: Green |
| cornerstone | Mitigating Systems |
| Identified by: | NRC identified |
| Inspection Procedure: | |
| Inspectors (proximate) | T Moslak J Caruso D Jackson S Pindale B Haagensen B Welling P Presby J Krafty S Shaffer J Johnson |
| CCA | P.1, Identification |
| INPO aspect | PI.1 |
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Finding - Millstone - IR 05000336/2010005 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Millstone) @ 2010Q4
Self-Identified List (Millstone)
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