05000498/FIN-2013007-02
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Finding | |
|---|---|
| Title | Improper Sequencing of Maintenance of 4160 VAC Circuit Breakers Prior to As-Found Tests |
| Description | The team identified a Green, non-cited violation of 10 CFR Part 50, Appendix B, Criterion XI, Test Control, which states, in part, A test program shall be established to assure that all testing required to demonstrate that structures, systems, and components will perform satisfactorily in service is identified and performed in accordance with written test procedures which incorporate the requirements and acceptance limits contained in applicable design documents. Specifically, prior to January 13, 2014, the licensees preventive maintenance Procedures OPMPO5-NA-002, 4160V Gould Breaker Test, and OPMP05-NA-0018 4160 Volt Gould HK Breaker Overhaul/Lubrication, failed to assure that the 4160 VAC Gould circuit breakers would perform satisfactorily in service when the licensee performed maintenance prior to completing as-found tests to verify the circuit breakers would function properly. In response to this issue, the licensee validated that the components had passed their required surveillance tests and remained operable. This finding was entered into the licensees corrective action program as Condition Reports14-738 and 14-1633. The team determined that failure to establish a test and maintenance program which ensures that safety-related 4160 VAC Gould circuit breakers would perform satisfactorily in service was a performance deficiency. This finding was more than minor because if left uncorrected, it would lead to a more significant safety concern. Specifically, the failure to perform as-found tests prior to performing maintenance in preventive maintenance procedures was a significant programmatic deficiency which could cause unacceptable conditions to go undetected. In accordance with Inspection Manual Chapter 0609, Appendix A, The Significance Determination Process (SDP) for Findings At-Power, dated June 19, 2012, Exhibit 2, Mitigating Systems Screening Questions, the issue screened as having very low safety significance (Green) because it was a design or qualification deficiency that did not represent a loss of operability or functionality; did not represent an actual loss of safety function of the system or train; did not result in the loss of one or more trains of non-technical specification equipment; and did not screen as potentially risk significant due to seismic, flooding, or severe weather. This finding had a crosscutting aspect in the area of human performance, documentation component because the licensee failed to create and maintain complete, accurate, and up-to-date documentation. |
| Site: | South Texas  |
|---|---|
| Report | IR 05000498/2013007 Section 1R21 |
| Date counted | Mar 31, 2014 (2014Q1) |
| Type: | NCV: Green |
| cornerstone | Mitigating Systems |
| Identified by: | NRC identified |
| Inspection Procedure: | IP 71111.21 |
| Inspectors (proximate) | N Okonkwo S Kobylarz T Farnholtz T Skaggs Ryan C Cowdrey G Replogle J Dixon J Zudans |
| Violation of: | 10 CFR 50 Appendix B Criterion XI |
| CCA | H.7, Documentation |
| INPO aspect | WP.3 |
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Finding - South Texas - IR 05000498/2013007 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (South Texas) @ 2014Q1
Self-Identified List (South Texas)
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