05000336/FIN-2009005-03
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Finding | |
|---|---|
| Title | RCS Drain Down Loss of Configuration Control |
| Description | A Green, self-revealing non-cited violation (NCV) of Millstone Technical Specification (TS) 6.8.1 (a), Procedures, was identified for Dominion\'s failure to adequately implement procedures during partial draining of the reactor coolant system(RCS) in preparation for defueling the reactor. Dominion did not properly align the reactor vessel vent path prior to partially draining the RCS as required by Dominion procedure OP-2301E, Draining the RCS (ICCE). Immediate corrective actions included stopping the drain down and verifying the valve alignment. Dominion entered this issue into the corrective action program (CR 351853).This finding was more than minor because it was associated with the Human Performance attribute of the Initiating Events cornerstone, and affected the cornerstone objective to limit the likelihood of those events that challenge critical safety functions during shutdown operations. Specifically, the operators failed to properly position 2-RC447to vent to the reactor vessel during partial drain down of the reactor vessel. The inspectors determined the significance of this finding using NRC Inspection Manual Chapter 0609, Appendix G, Shutdown Operations Significant Determination Process. This finding had a cross-cutting aspect in the Human Performance cross-cutting area, Work Practices component, because Dominion failed to define and effectively communicate expectations regarding procedural compliance, and personnel follow procedures. H.4(b |
| Site: | Millstone  |
|---|---|
| Report | IR 05000336/2009005 Section 1R20 |
| Date counted | Dec 31, 2009 (2009Q4) |
| Type: | NCV: Green |
| cornerstone | Initiating Events |
| Identified by: | Self-revealing |
| Inspection Procedure: | IP 71111.2 |
| Inspectors (proximate) | T Moslak D Silk G Johnson D Jackson M Modes B Haagensen J Krafty S Shaffer |
| CCA | H.8, Procedure Adherence |
| INPO aspect | WP.4 |
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Finding - Millstone - IR 05000336/2009005 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Millstone) @ 2009Q4
Self-Identified List (Millstone)
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