05000397/FIN-2013004-01
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Finding | |
|---|---|
| Title | Improperly Installed Jumper Results in Inoperable Remote Transfer Switch |
| Description | The inspectors identified a non-cited violation of Technical Specification 3.3.3.2, Remote Transfer System, involving the licensees failure to remove a jumper in the 480 volt motor control center starter for residual heat removal suppression pool spray valve RHR-V-27B during planned replacement activities. The failure to remove the jumper rendered the remote transfer switch for valve RHR-V-27B inoperable for a period greater than allowed by the stations technical specifications. This issue was entered into the licensees corrective action program as Action Request AR 286816. The performance deficiency was more than minor because it affected the protection from external events attribute of the Mitigating System Cornerstone objective and adversely affected the cornerstone objective to ensure the availability, reliability, and capability of systems that respond to initiating events to prevent undesirable consequences. The inspectors performed an initial screening of the finding in accordance with NRC Manual Chapter IMC 0609, Appendix A, The Significance Determination Process for (SDP) for Findings At-Power. Since the inoperable remote transfer switch potentially affected post-fire safe shutdown, the finding was evaluated using IMC 0609, Appendix F, Attachment 1, Part 1: Application of Fire Protection SDP Phase 1 Worksheet. Using Attachment 1, Task 1.3.1, Qualitative Screening for All Finding Categories, the inspectors determined that the finding was of very low safety significance (Green) because it only affected the ability to reach and maintain cold shutdown conditions and did not affect the ability to achieve hot shutdown conditions. The inspectors determined that this finding had a cross-cutting aspect in the area of human performance associated with the decision making component because operations personnel changed the postmaintenance testing for RHR-V-27B motor control center starter to a test that was incapable of detecting the improperly installed jumper. |
| Site: | Columbia  |
|---|---|
| Report | IR 05000397/2013004 Section 4OA2 |
| Date counted | Sep 30, 2013 (2013Q3) |
| Type: | NCV: Green |
| cornerstone | Mitigating Systems |
| Identified by: | NRC identified |
| Inspection Procedure: | IP 71152 |
| Inspectors (proximate) | G Replogle J Groom J Laughlin M Hayes P Elkmann W Walkerm Hair |
| Violation of: | Technical Specification |
| CCA | H.13, Consistent Process |
| INPO aspect | DM.1 |
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Finding - Columbia - IR 05000397/2013004 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Columbia) @ 2013Q3
Self-Identified List (Columbia)
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