05000390/FIN-2010003-02
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Finding | |
|---|---|
| Title | Lack of Procedure Implementation Results in 1B EDG being started with 15 Cylinder Plugs Open |
| Description | A self-revealing, non-cited violation (NCV) of Technical Specifications (TS) 5.7.1, Procedures, was identified for the licensees failure to adhere to OPDP-1, Conduct of Operations, Section 5.1, Procedure Adherence, resulting in the 1B Emergency Diesel Generator being returned to service with 15 cylinder valves open. The licensee entered this issue into the corrective action program as problem evaluation report (PER) 232018. Failing to ensure that safety-related equipment was properly returned to service was a performance deficiency. The performance deficiency was determined to be more than minor, and therefore a finding, because it was associated with the human performance attribute of the Mitigating Systems Cornerstone and adversely affected the cornerstone objective to ensure the availability, reliability, and capability of systems that respond to initiating events to prevent undesirable consequences (i.e., core damage). The finding was evaluated using the Significance Determination Process Phase I and was determined to be a finding of very low safety significance because the valve mispositioning was found and corrected in less than the TS allowable outage time. The cause of the finding was directly related to the crosscutting area of the human performance, error prevention aspect of the work practices component, in that, the licensee failed to ensure that personnel did not proceed in the face of uncertainty when one of the cylinder valves was determined to be in the incorrect position H.4(a). |
| Site: | Watts Bar  |
|---|---|
| Report | IR 05000390/2010003 Section 4OA3 |
| Date counted | Jun 30, 2010 (2010Q2) |
| Type: | NCV: Green |
| cornerstone | Mitigating Systems |
| Identified by: | Self-revealing |
| Inspection Procedure: | IP 71153 |
| Inspectors (proximate) | R Monk E Guthrie M Pribish |
| CCA | H.12, Avoid Complacency |
| INPO aspect | QA.4 |
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Finding - Watts Bar - IR 05000390/2010003 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Watts Bar) @ 2010Q2
Self-Identified List (Watts Bar)
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