05000325/FIN-2014004-01
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Finding | |
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| Title | Inadequate Procedure to Perform Core Ground Checks on the Common Bus C Transformer |
| Description | A self-revealing Green finding of Licensee Procedure 0PM-XMR001, ITE Substation Transformers, was identified for the failure to have an adequate procedure to perfor
preventative maintenance on the Common Bus C 4160/480V Transformer. Specifically between May 6, 2009 and March 23, 2012, the licensee failed to incorporate Procedur Revision Requests (PRRs) 312951 and 334482 to add core ground testing of the Common C transformer, resulting in the transformer failing and a Unit 1 manual reactor SCRAM. The licensee replaced the transformer to Common Bus C. The licensee entered this issue into the CAP as nuclear condition report (NCR) 519193. The inspectors determined that the failure of the licensee to have an adequate procedure t perform preventative maintenance on the Common Bus C transformer was a performance deficiency. The finding was more than minor because it was associated with the equipment performance attribute of the Initiating Events Cornerstone and affects the cornerstone objective to limit the likelihood of events that upset plant stability and challenge critical safety functions during shutdown as well as power operations. Specifically, the failure to perform preventative maintenance on the Common Bus C transformer resulted in the transformer failing and a Unit 1 manual reactor SCRAM. Using IMC 0609, Appendix A, issued June 19, 2012, the SDP for Findings At-Power, the inspectors determined the finding was of very low safety significance (Green) because the finding 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. The finding does not have a cross-cutting aspect since the performance deficiency is not indicative of current plant performance. The PRR was initiated on May 6, 2009. |
| Site: | Brunswick  |
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| Report | IR 05000325/2014004 Section 1R12 |
| Date counted | Sep 30, 2014 (2014Q3) |
| Type: | Finding: Green |
| cornerstone | Initiating Events |
| Identified by: | Self-revealing |
| Inspection Procedure: | IP 71111.12 |
| Inspectors (proximate) | A Nielsen A Vargas D Bacon G Hopper M Catts M Meeks M Schwieg |
| INPO aspect | |
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Finding - Brunswick - IR 05000325/2014004 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Brunswick) @ 2014Q3
Self-Identified List (Brunswick)
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