05000461/FIN-2015003-01
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Finding | |
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| Title | Failure to Follow Procedure leaves Control Room Cabinet doors Unattended in Seismically Unanalyzed Condition |
| Description | The inspectors identified a finding of very low safety significance, and an associated NCV of Title 10, Code of Federal Regulations (CFR), Part 50, Appendix B, Criterion V, Instructions, Procedures, and Drawings, for the licensees failure to maintain control room cabinet doors in a seismically analyzed condition in accordance with procedure Clinton Power Station (CPS) 1014.11, 6900/4160/480v Switchgear/Circuit Breaker Operability Program, Revision 5a. Specifically, the licensee failed to maintain control room cabinet doors in seismically qualified positions while performing maintenance or trouble shooting activities due to leaving the doors open and unattended. The licensee documented the issue in the Corrective Action Program (CAP) as action request (AR) 02518477. The licensee revised the station procedure to ensure control room cabinet doors either remain latched closed or be completely removed when unattended and had issued a standing order to ensure the requirements were reinforced. The performance deficiency was more than minor because it was associated with the configuration control performance attribute of the Initiating Events cornerstone and adversely affected the cornerstone objective to limit the likelihood of those events that upset plant stability and challenge critical safety functions during shutdown as well as power operations and was therefore a finding. Specifically, leaving the doors in a seismically unanalyzed condition could challenge critical safety functions during a seismic event. The finding was screened against the Initiating Events cornerstone and determined to be of very low safety significance because it did not result in exceeding the reactor coolant system leak rate for a small loss of coolant accident, did not cause a reactor trip, did not involve the complete or partial loss of a support system that contributed to the likelihood of, or caused, an initiating event and did not affect mitigation equipment. This finding had a cross-cutting aspect of resources in the area of human performance because the licensee failed to ensure the personnel performing maintenance and troubleshooting had adequate documentation in written work instructions to maintain control room cabinets in seismically analyzed conditions. [H.1] |
| Site: | Clinton  |
|---|---|
| Report | IR 05000461/2015003 Section 1R15 |
| Date counted | Sep 30, 2015 (2015Q3) |
| Type: | NCV: Green |
| cornerstone | Initiating Events |
| Identified by: | NRC identified |
| Inspection Procedure: | IP 71111.15 |
| Inspectors (proximate) | A Shaikh C Phillips E Sanchez-Santiago J Bozga M Jones P Louden S Mischke W Schaup |
| Violation of: | 10 CFR 50 Appendix B Criterion V |
| CCA | H.1, Resources |
| INPO aspect | LA.1 |
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Finding - Clinton - IR 05000461/2015003 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Clinton) @ 2015Q3
Self-Identified List (Clinton)
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