05000334/FIN-2016002-03
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Finding | |
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| Title | Failure to Appropriately Utilize Multiple and Diverse Indications Results in Plant Transient |
| Description | A self-revealing finding of NOP-OP-1002, Conduct of Operations, was identified for FENOCs failure to adequately implement operator fundamentals. Specifically, operators did not appropriately utilize multiple and diverse indications when making the decision to isolate electro-hydraulic control (EHC) to a Unit 1 main turbine governor valve. This resulted in an unanticipated reactor power reduction of 2.7 percent. FENOCs immediate corrective actions included re-opening the governor valve, verifying proper system response, and entering this issue into their corrective action program (CAP) as CR 2015-08263. The performance deficiency is more-than-minor because if left uncorrected, the performance deficiency had the potential to lead to a more significant safety concern. Additionally, example 4.b from IMC 0612 Appendix E details that a performance deficiency is more-than minor if it causes a reactor trip or other transient. This finding was determined to be of very low safety significance (Green) since it did not cause both a reactor trip and the loss of mitigation equipment relied upon to transition the plant to a stable shutdown condition. This finding has a cross-cutting aspect in Human Performance, Challenge the Unknown, because individuals did not consult the system expert when confronted with an unexpected condition [H.11]. |
| Site: | Beaver Valley |
|---|---|
| Report | IR 05000334/2016002 Section 4OA2 |
| Date counted | Jun 30, 2016 (2016Q2) |
| Type: | Finding: Green |
| cornerstone | Initiating Events |
| Identified by: | Self-revealing |
| Inspection Procedure: | IP 71152 |
| Inspectors (proximate) | B Reyes J Krafty P Kaufman S Kennedy T Fish T Hedigan |
| CCA | H.11, Challenge the Unknown |
| INPO aspect | QA.2 |
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Finding - Beaver Valley - IR 05000334/2016002 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Beaver Valley) @ 2016Q2
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