05000269/FIN-2009005-03
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Finding | |
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| Title | Failure to Establish and Implement an Adequate Procedure for Performing Core Alignment Verification |
| Description | A self-revealing NCV of Technical Specification (TS) 5.4.1 was identified for failure to maintain procedure PT/0/A/0775/015, Core Alignment Verification, which resulted in damage to three Unit 1 fuel assemblies. This violation has been entered into the licensees corrective action program as PIP O-09-8444.The inspectors determined that the failure to include all fuel vendor guidance as acceptance criteria was a performance deficiency. This performance deficiency was considered to be more than minor because it is associated with the Procedural Quality attribute and adversely affected the Reactor Safety/Barrier Integrity cornerstone objective in that one fuel assembly was damaged and removed from the reactor. This finding was determined to be of very lows afety significance (Green) using Inspection Manual Chapter (MC) 0609, Appendix M. Appendix M was used because no other MC 0609 Attachments applied to refueling activities in containment. The key factors considered were 1) a qualitative barrier analysis of the plant by a senior reactor analyst which determined that the risk significance of the event/condition was low (i.e., equivalent to < 1E-6 conditional core damage probability operational event), 2)no failure of fuel pins resulting in release of radioactivity, 3) containment integrity was maintained, and 4) only one fuel assembly was affected. This finding has a cross-cutting aspect of implementing and incorporating operating experience into station procedures P.2(b), as described in the Operating Experience component of the Problem Identification and Resolution cross-cutting area. The licensee failed to incorporate revisions to the vendor guidance into the procedure used to perform core alignment verification. |
| Site: | Oconee  |
|---|---|
| Report | IR 05000269/2009005 Section 1R20 |
| Date counted | Dec 31, 2009 (2009Q4) |
| Type: | NCV: Green |
| cornerstone | Barrier Integrity |
| Identified by: | Self-revealing |
| Inspection Procedure: | IP 71111.2 |
| Inspectors (proximate) | J Bartley W Loo H Gepford A Sabisch G Ottenberg E Riggs C Fletcher K Ellis A Vargas L Mahlahla |
| CCA | P.5, Operating Experience |
| INPO aspect | CL.1 |
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Finding - Oconee - IR 05000269/2009005 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Oconee) @ 2009Q4
Self-Identified List (Oconee)
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