05000220/FIN-2012003-02
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Finding | |
|---|---|
| Title | Inadequate Corrective Action for Instrument Fill and Vent Activities |
| Description | A self-revealing NCV of 10 CFR Part 50, Appendix B, Criterion XVI, Corrective Action, was identified for NMPNS failure to effectively implement corrective actions. Specifically, NMPNSs corrective actions from a differential fill and vent evolution which caused a reactor scram in January 2010 were ineffective in preventing an inadvertent start of the Division I EDG on a Level 1 ECCS initiation (reactor pressure vessel low-low-low level) signal on April 26, 2012, during a similar fill and vent evolution. NMPNS entered this issue into its corrective action program as CR-2012-003778. The finding is more than minor because it adversely impacted the human performance attribute of the Initiating Events Cornerstone to limit the likelihood of those events that upset plant stability and challenge critical safety functions during shutdown as well as power operations. The finding was determined to be of very low significance (Green) because of the availability of safety systems and procedures pertaining to core heat removal, inventory control, electrical power, and secondary containment. The finding has a cross-cutting aspect in the area of problem identification and resolution, corrective action program, because Nine Mile Point Nuclear Station did not take appropriate corrective actions to address safety issues commensurate with their safety significance and complexity. Specifically, the corrective actions taken as a result of the January 7, 2010 event were ineffective in preventing the April 26, 2012 event. |
| Site: | Nine Mile Point  |
|---|---|
| Report | IR 05000220/2012003 Section 1R19 |
| Date counted | Jun 30, 2012 (2012Q2) |
| Type: | NCV: Green |
| cornerstone | Initiating Events |
| Identified by: | Self-revealing |
| Inspection Procedure: | IP 71111.19 |
| Inspectors (proximate) | P Kaufman D Dempsey R Fuhrmeister K Kolaczyk J Furia E Gray G Dentel J Nicholson B Dionne E Miller |
| CCA | P.3, Resolution |
| INPO aspect | PI.3 |
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Finding - Nine Mile Point - IR 05000220/2012003 | |||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Nine Mile Point) @ 2012Q2
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