05000321/FIN-2015003-02
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Finding | |
|---|---|
| Title | 1A PSW Pump High Vibration Failure |
| Description | A self-revealing, NCV of 10 CFR 50, Appendix B, Criterion V, Procedures, Instructions, and Drawings, was identified when the licensee failed to provide instructions to ensure alignment of the 1A plant service water (PSW) pump column in the true vertical position. The failure to align the 1A PSW pump column resulted high stresses which caused the failure of the 1A PSW pump. To restore compliance, the licensee replaced the 1A PSW pump and revised the pump installation procedure to ensure the pump column is aligned in the true vertical position. Failure to provide instructions to ensure appropriate vertical alignment of the 1A PSW pump column was a performance deficiency. This performance deficiency was more than minor because it affected the Mitigating Systems cornerstone attribute of Equipment Performance and adversely affected the cornerstone objective in that the misalignment of the pump column resulted in inoperability of the 1A PSW pump. A regional Senior Reactor Analyst (SRA) performed a detailed risk review of the finding. The SRA calculated the difference between the risk associated with loss of offsite power (LOOP) events with extended recovery times with the 1A pump available, and without the pump. Because of the low frequency of the seismic event, the finding was determined to be Green. The inspectors determined that this finding did not have an associated cross cutting aspect because this finding was not reflective of current licensee performance. |
| Site: | Hatch  |
|---|---|
| Report | IR 05000321/2015003 Section 4OA3 |
| Date counted | Sep 30, 2015 (2015Q3) |
| Type: | NCV: Green |
| cornerstone | Mitigating Systems |
| Identified by: | Self-revealing |
| Inspection Procedure: | IP 71153 |
| Inspectors (proximate) | D Hardage D Retterer J Dymek J Montgomery M Cain S Sandal |
| Violation of: | 10 CFR 50 Appendix B Criterion V |
| INPO aspect | |
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Finding - Hatch - IR 05000321/2015003 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Hatch) @ 2015Q3
Self-Identified List (Hatch)
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