05000397/FIN-2014003-05
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Finding | |
|---|---|
| Title | Failure to Perform Adequate Verification of Breaker Cubicle Fit Results in Loss of Reactor Recirculation Pump |
| Description | The inspectors reviewed a self-revealing Green finding of Technical Specification
5.4.1.a for the licensee's failure to verify that circuit breaker E-CB-S5 was properly installed in accordance with procedure SOP-ELEC-BKR-OPS, AC Electrical Breaker Racking, Revision 10. The improper installation of breaker E-CB-S5 resulted in an unexpected loss of bus E-SH-5 during a bus transfer and trip of reactor recirculation pump RRC-P-1A. The licensee entered this issue into their corrective action program as Action Request (AR) 302282. The finding was more than minor because it affected the configuration control attribute of the Initiating Events 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. This finding is of very low safety significance (Green) because it did not cause a reactor trip and the loss of mitigation equipment relied upon to transition the plant from the onset of the trip to a stable shutdown condition. This finding has a cross-cutting aspect in the area of human performance because the licensee failed to ensure that tools, equipment and othe
resources were available to adequately support verification of breaker racking activitie [H.1]. (Section 4OA2) |
| Site: | Columbia  |
|---|---|
| Report | IR 05000397/2014003 Section 4OA2 |
| Date counted | Jun 30, 2014 (2014Q2) |
| Type: | Finding: Green |
| cornerstone | Initiating Events |
| Identified by: | Self-revealing |
| Inspection Procedure: | IP 71152 |
| Inspectors (proximate) | B Baca D Bradley D Reinert J Groom L Ricketson N Taylor P Elkmann |
| CCA | H.1, Resources |
| INPO aspect | LA.1 |
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Finding - Columbia - IR 05000397/2014003 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Columbia) @ 2014Q2
Self-Identified List (Columbia)
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