05000255/FIN-2008003-04
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Finding | |
|---|---|
| Title | Improper Maintenance of Safeguards Transformer |
| Description | A self-revealing finding occurred on April 1 when a non-safety related, offsite transformer was declared inoperable due to evidence of internal arcing in the load tap changer oil reservoir. The failure occurred due to improper maintenance on the tap changer during the last outage. The failure was not a violation of NRC requirements. The licensee repaired the transformer and returned it to service. The licensee entered the issue into the corrective action program as CR-PLP-2008-1500. The finding is more than because it impacts the equipment performance attribute of the Mitigating Systems cornerstone and adversely affects the objective to ensure availability, reliability and capability of systems which respond to initiating events. Specifically, the improper assembly of parts for the load tap changer led to the arcing in the tap changer oil reservoir, the removal of the transformer from service and declaration of one offsite power source being inoperable and unavailable. The inspectors determined the finding is of very low safety significance, Green, in accordance with the phase one screening checklist because even though the tap changer had one contact on one phase that was not available, the tap changer would have been available to perform its function and tap change during licensed basis events. The finding does not represent a violation of NRC requirements; however, it does represent a failure to meet self-imposed requirements to provide task instructions commensurate with the complexity of the work and qualifications of the workers. The finding includes a cross-cutting aspect in the area of Human Performance, Resources, due to an inadequate work package (H.2(c)). (Section 4OA3 |
| Site: | Palisades  |
|---|---|
| Report | IR 05000255/2008003 Section 4OA3 |
| Date counted | Jun 30, 2008 (2008Q2) |
| Type: | Finding: Green |
| cornerstone | Mitigating Systems |
| Identified by: | Self-revealing |
| Inspection Procedure: | IP 71153 |
| Inspectors (proximate) | J Cassidy D Jones J Ellegood S Bakhsh R Telson J Giessner M Learn N Adorno |
| CCA | H.7, Documentation |
| INPO aspect | WP.3 |
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Finding - Palisades - IR 05000255/2008003 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Palisades) @ 2008Q2
Self-Identified List (Palisades)
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