05000354/FIN-2017001-01
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Finding | |
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| Title | Inadequate Control of Defective Material Causes the A EDG to Fail to Start |
| Description | A self-revealing very low safety significance (Green) NCV of Title 10 of the Code of Federal Regulations (10 CFR) 50, Appendix B, Criterion VIII, Identification and Control of Materials, Parts and Components, was identified because PSEG did not have adequate control measures to prevent the use of defective parts. Specifically, following the C emergency diesel generator (EDG) speed switch (SS) failure on August 4, 2016, PSEGs control measures did not prevent the installation of the previously failed SS, with susceptible degradation due to the components previous failure history, known manufacturing and design deficiencies, and damage sustained during the receipt inspection process, into the A EDG on January 6, 2017. Consequently, less than one month later on February 3, 2017, the A EDG failed to start due to a failed SS. PSEGs corrective actions (CAs) included replacing the SS, identifying an equivalent replacement for the currently installed SS design, scheduling the replacement of the new SSs, and performing extent of condition inspections and testing of all the installed and spare EDG SSs. The issue was more than minor because it was associated with the Equipment Performance attribute of the Mitigating Systems cornerstone and adversely affected the cornerstone objective of ensuring the reliability of systems that respond to initiating events to prevent undesirable consequences. Specifically, PSEGs installation of a previously failed SS, with susceptible degradation due to the components previous failure history, known manufacturing and design deficiencies, and damage sustained during the receipt inspection process, into the A EDG on January 6, 2017, led to the A EDG failing to start on February 3, 2017. In accordance with IMC 0609.04, Initial Characterization of Findings, dated October 7, 2016, and Exhibit 2 of IMC 0609, Appendix A, The SDP for Findings AtPower, dated June 19, 2012, the inspectors determined that this finding was Green because it was not a design or qualification deficiency, did not involve an actual loss of safety function, did not represent the actual loss of a safety function of a single train for greater than its technical specifications (TSs) allowed outage time, and did not represent an actual loss of function of one or more non-TS trains of equipment designated as high safety-significant in PSEGs maintenance rule program (MRP) for greater than 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />. This finding had a cross-cutting aspect in the area of Problem Identification and Resolution, Evaluation, because PSEG did not thoroughly evaluate issues to ensure that resolutions address causes and extent of conditions commensurate with their safety significance. Specifically, PSEG did not thoroughly evaluate their previous failure analyses (FA) performed on the failed SSs to ensure that resolutions addressed the actual failure mode[P.2]. |
| Site: | Hope Creek  |
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| Report | IR 05000354/2017001 Section 4OA2 |
| Date counted | Mar 31, 2017 (2017Q1) |
| Type: | NCV: Green |
| cornerstone | Mitigating Systems |
| Identified by: | Self-revealing |
| Inspection Procedure: | IP 71152 |
| Inspectors (proximate) | B Deboer H Gray J Furia J Hawkins J Nicholson J Patel J Schoppy M Scott N Floyd P Boguszewski S Haney |
| Violation of: | 10 CFR 50 Appendix B 10 CFR 50 Appendix B Criterion VIII, Identification and Control of Materials, Parts, and Components |
| CCA | P.2, Evaluation |
| INPO aspect | PI.2 |
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Finding - Hope Creek - IR 05000354/2017001 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Hope Creek) @ 2017Q1
Self-Identified List (Hope Creek)
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