05000397/FIN-2011003-01
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Finding | |
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| Title | Loss of Reactor Coolant System Inventory During Reactor Pressure Vessel Flood-up |
| Description | The inspectors identified a noncited violation of Technical Specification 5.4.1.a for the licensee\'s failure to provide procedures appropriate to the circumstances to perform flood-up. Specifically, operators inadvertently drained 4000 gallons of water from the reactor pressure vessel during reactor cavity fill operations using Plant Procedure Manual SOP-CAVITY-FILL, Reactor Cavity and Dryer Separator Pit Fill, Revision 10, because of inadequate procedural guidance. This issue was placed in the licensees corrective action program as Action Requests 237779 and 238032. The performance deficiency was more than minor because it affected the procedure quality attribute of the Initiating Events Cornerstone objective to limit the likelihood of those events that upset plant stability and challenge critical safety functions during shutdown operations. The inspectors used Inspection Manual Chapter 0609, Appendix G, Shutdown Operations - Significance Determination Process to evaluate the significance of the finding. The finding did not require a quantitative assessment because adequate mitigating equipment remained available and because the event did not result in a loss of more than 2 feet of inventory. Therefore, the finding screened as Green. The inspectors determined that this finding did not have a cross-cutting aspect because of inadequate corrective actions from a similar event that occurred greater than two years previously was not representative of current licensee performance. |
| Site: | Columbia  |
|---|---|
| Report | IR 05000397/2011003 Section 1R20 |
| Date counted | Jun 30, 2011 (2011Q2) |
| Type: | NCV: Green |
| cornerstone | Initiating Events |
| Identified by: | NRC identified |
| Inspection Procedure: | IP 71111.2 |
| Inspectors (proximate) | M Hayes C Graves R Cohen W Walker |
| INPO aspect | |
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Finding - Columbia - IR 05000397/2011003 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Columbia) @ 2011Q2
Self-Identified List (Columbia)
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