05000338/FIN-2010003-01
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Finding | |
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| Title | Failure to Demonstrate Effective Control of a Pressurizer PORV 1-RC-PCV-1455C Performance in Accordance with the Maintenance Rule |
| Description | A non-cited violation of 10 CFR 50.65, Requirements for Monitoring the Effectiveness of Maintenance at Nuclear Plants, was identified by the inspectors for the failure to demonstrate that the performance of a Unit 1 pressurizer power operated relief valve (PORV), 1-RC-PCV-1455C, was being effectively controlled through preventative maintenance in accordance with 10 CFR 50.65 (a)(2) and establish performance goals and monitor against those goals in accordance with 10 CFR 50.65 (a)(1). The licensee entered this into their corrective action program as condition report 374734
The inspectors determined that the failure to demonstrate that the performance of 1- RC-PCV-1455C, was being effectively controlled through preventative maintenance in accordance with 10 CFR 50.65 (a)(2) was a performance deficiency. The inspectors reviewed Inspection Manual Chapter 0612, Appendix B and determined the finding was more than minor because it affected the Barrier Integrity cornerstone objective of providing reasonable assurance that physical design barriers (e.g. reactor coolant system (RCS) protect the public from radionuclide releases caused by accidents or events. Specifically, RCS equipment and barrier performance, in that the PORVs provide protection to the RCS by preventing brittle fracture at low temperature conditions and protect RCS integrity at high temperature conditions The inspectors determined that this performance deficiency was a separate consequence of the degraded performance associated with 1-RC-PCV-1455C. Therefore, in accordance with the guidance provided in NRC Inspection Procedure 71111.12, Appendix D, this issue was determined to be a maintenance rule Category II finding and was of very low safety significance (Green). The cause of this finding involved the cross-cutting area of human performance, the component of work practices, and the aspect of human error prevention (H.4(a)), because the licensee failed to verify that the correct maintenance rule function performance criteria was being used to conduct maintenance rule evaluations. |
| Site: | North Anna  |
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| Report | IR 05000338/2010003 Section 1R12 |
| Date counted | Jun 30, 2010 (2010Q2) |
| Type: | NCV: Green |
| cornerstone | Barrier Integrity |
| Identified by: | NRC identified |
| Inspection Procedure: | IP 71111.12 |
| Inspectors (proximate) | J Rivera-Ortiz J Reece R Carrion G Mccoy R Clagg R Williams |
| CCA | H.12, Avoid Complacency |
| INPO aspect | QA.4 |
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Finding - North Anna - IR 05000338/2010003 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (North Anna) @ 2010Q2
Self-Identified List (North Anna)
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