05000298/FIN-2009005-15
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Finding | |
|---|---|
| Title | Licensee-Identified Violation |
| Description | 10 CFR Part 50, Appendix B, Criterion V, Instructions, Procedures and Drawings, requires, that activities affecting quality shall be accomplished in accordance with procedures that are appropriate for the circumstances. Contrary to this requirement, during preparation for refueling outage 25, the plant staff failed to follow the guidance of Section 5 of Administrative Procedure 0.50.5, Outage Shutdown Safety, Revision 12. Specifically, the licensed operators failed to manage the risks associated with an operation with the potential to drain the reactor vessel. This performance deficiency was discovered on September 27, 2009, while shut down in Mode 4, by a control room operator who noted reactor vessel water level lowering and was documented in CR-CNS-2009-07191. Reactor vessel water level control was lost for five minutes when an inadvertent drain path was established lowering vessel level four inches prior to restoring a positive rising level. The inspectors determined that this issue was of very low safety significance because no loss of system safety function resulted from the performance deficiency |
| Site: | Cooper  |
|---|---|
| Report | IR 05000298/2009005 Section 4OA7 |
| Date counted | Dec 31, 2009 (2009Q4) |
| Type: | NCV: Green |
| cornerstone | Mitigating Systems |
| Identified by: | Licensee-identified |
| Inspection Procedure: | |
| Inspectors (proximate) | N Taylor P Elkmann D Stearns V Gaddy M Chambers E Uribe M Bloodgood D Reinert N Okonkwo M Vasquez |
| INPO aspect | |
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Finding - Cooper - IR 05000298/2009005 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Cooper) @ 2009Q4
Self-Identified List (Cooper)
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