05000483/FIN-2012008-01
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Finding | |
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| Title | Failure to identify and correct the failure mode of an essential service water pump |
| Description | The team reviewed a Green self-revealing non-cited violation of 10 CFR Part 50, Appendix B, Criterion XVI, Corrective Action, for the licensees failure to promptly identify and correct a condition adverse to quality. During troubleshooting, the licensee incorrectly identified a failed circuit card as the cause of an essential service water pump room fan damper failure. The licensee returned the damper to service and declared the associated pump operable without identifying the actual failurepinched wires introduced during previous maintenance. This resulted in a subsequent failure. The failure to identify that pinched wires had caused the damper failure and to correct the condition before replacing the circuit card and declaring the system operable was a performance deficiency. This performance deficiency was more than minor because it adversely affected the equipment performance attribute of the Mitigating Systems cornerstone objective to ensure the availability, reliability, and capability of systems that respond to initiating events to prevent undesirable consequences. Using Inspection Manual Chapter 0609.04, Phase 1 Initial Screening and Characterization of Findings, the team determined the finding to be of very low safety significance (Green) because it did not result in the loss of the safety function of any system or train and did not screen as potentially risk significant due to seismic, flooding, or severe weather initiating events. This finding had a cross-cutting aspect in the decision-making component of the human performance cross-cutting area because the licensee failed to conduct an effectiveness review of safety-significant decisions to verify the validity of the underlying assumptions or identify possible unintended consequences. |
| Site: | Callaway  |
|---|---|
| Report | IR 05000483/2012008 Section 4OA2 |
| Date counted | Sep 30, 2012 (2012Q3) |
| Type: | NCV: Green |
| cornerstone | Mitigating Systems |
| Identified by: | Self-revealing |
| Inspection Procedure: | IP 71152 |
| Inspectors (proximate) | M Keefe M Hayes C Denissen Z Hollcraft K Watanabe R Telson R Kellar |
| CCA | H.14, Conservative Bias |
| INPO aspect | DM.2 |
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Finding - Callaway - IR 05000483/2012008 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Callaway) @ 2012Q3
Self-Identified List (Callaway)
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