05000261/FIN-2017007-01
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Finding | |
|---|---|
| Title | Failure to Correctly Determine Qualified Life |
| Description | The NRC identified a non-cited violation of Title 10 of the Code of Federal Regulations (10 CFR) Part 50, Appendix B, Criterion V, Instructions, Procedures, and Drawings, for the licensees failure to establish a qualified life for the motors covered by Environmental Qualification Documentation Package (EQDP)-0 803 in accordance with their administrative procedure AD-EG-ALL-1612, Environmental Qualification (EQ) Program. Specifically, the licensee did not correctly establish a qualified life for the motors covered by EQDP-0803 due to a calculational error. In response to the issue, Robinson staff placed the issue in their corrective action program as NCRs 2155050 and 2158467, and demonstrated operability by removing conservatisms regarding assumptions for cumulative energized time of the motors. Additionally, the licensee plans to replace the affected motors. This performance deficiency 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 availability, reliability, and capability of systems that respond to initiating events to prevent undesirable consequences. Specifically, not establishing the correct qualified life for the motors resulted in a reduction in margin that impacted the reliability of the equipment. The team determined the finding to be of very low safety significance (Green) because the finding was a deficiency affecting the design or qualification of a mitigating structure, system, or component (SSC), and the SSC maintained its operability or functionality. The inspectors determined that the finding was indicative of current licensee performance, because the error occurred on June 28, 2017. A cross-cutting aspect of Documentation [H.7] in the Human Performance Area was assigned because the organization did not create and maintain complete, accurate and up to-date documentation. |
| Site: | Robinson  |
|---|---|
| Report | IR 05000261/2017007 Section 1R21 |
| Date counted | Dec 31, 2017 (2017Q4) |
| Type: | NCV: Green |
| cornerstone | Mitigating Systems |
| Identified by: | NRC identified |
| Inspection Procedure: | IP 71111.21N |
| Inspectors (proximate) | G Ottenberg T Fanelli M Greenleaf S Walker |
| Violation of: | 10 CFR 50 Appendix B Criterion V |
| CCA | H.7, Documentation |
| INPO aspect | WP.3 |
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Finding - Robinson - IR 05000261/2017007 | |||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Robinson) @ 2017Q4
Self-Identified List (Robinson)
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