05000272/FIN-2015002-05
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Finding | |
|---|---|
| Title | Failure to Establish Appropriate Breaker Preventive Maintenance Periodicity |
| Description | A self-revealing Green NCV of 10 CFR 50, Appendix B, Criterion V, Instruction, Procedures, and Drawings, was identified because PSEG did not establish an appropriate interval to overhaul 4kV General Electric (GE) Magne-Blast breakers. As a result, the safety-related breakers for the 12 safety injection (SI) pump and 11 component cooling water (CCW) pump were operated beyond the industry recommended overhaul interval and subsequently failed. PSEGs corrective actions included replacing the 12 SI pump and 11 CCW pump breakers, and reducing the overhaul preventive maintenance (PM) frequency to 12 years. This finding is more than minor because it is associated with the equipment performance attribute of the Mitigating Systems cornerstone, and adversely affected the cornerstone objective to ensure the availability, reliability, and capability of systems that respond to initiating events to prevent undesirable consequences. Specifically, PSEG did not consider industry recommendations nor develop a basis when establishing 4kV GE Magne-Blast breaker overhaul intervals, which resulted in failure of the 12 SI pump and 11 CCW pump breakers. In accordance with Exhibit 2 of IMC 0609, Appendix A, The Significance Determination Process for Findings At-Power, issued June 19, 2012, the inspectors determined that the finding was of very low safety significance (Green), because the finding was not a deficiency affecting the design or qualification of the mitigating system; it did not represent a loss of system function; it did not represent the loss of function for any TS system, train, or component beyond the allowed TS outage time; and it did not represent an actual loss of function of any non TS trains of equipment designated as high safety significance in accordance with PSEGs maintenance rule program. The inspectors determined this finding has a cross-cutting aspect in the area of Problem Identification and Resolution, Operating Experience, because PSEG did not systematically and effectively collect, evaluate, and implement relevant internal and external operating experience in a timely manner. Specifically, the overhaul frequencies assigned to safety-related 4KV breaker inspections were inadequate to ensure the breakers would operate properly. |
| Site: | Salem  |
|---|---|
| Report | IR 05000272/2015002 Section 4OA2 |
| Date counted | Jun 30, 2015 (2015Q2) |
| Type: | NCV: Green |
| cornerstone | Mitigating Systems |
| Identified by: | Self-revealing |
| Inspection Procedure: | IP 71152 |
| Inspectors (proximate) | R Nimitz S Galbreath S Haney S Mccarver T Hedigan A Ziedonis G Dentel P Finney R Barkley |
| Violation of: | 10 CFR 50 Appendix B Criterion V Technical Specification Technical Specification - Procedures |
| CCA | P.5, Operating Experience |
| INPO aspect | CL.1 |
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Finding - Salem - IR 05000272/2015002 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Salem) @ 2015Q2
Self-Identified List (Salem)
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