05000338/FIN-2010002-06
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Finding | |
|---|---|
| Title | Failure to Install LSHI/ORS Pump Discharge Piping in accordance with Prescribed Drawings |
| Description | A non-cited violation of 10 CFR 50, Appendix B, Criterion V, Instructions, Procedures and Drawings, was identified by the NRC for the failure to accomplish the installation of low head safety injection (LHSI) and outside recirculation spray (ORS) pump discharge piping in accordance with prescribed drawings which resulted in piping interference involving hard contact between the aforementioned system piping. The licensee entered this problem into their corrective action program as condition report 343744.A performance deficiency (PD) was identified by the NRC for the failure to adequately to accomplish the installation of LHSI and ORS pump discharge piping in accordance with prescribed drawings which resulted in hard contact between the aforementioned system piping. This PD had a credible impact on safety due to the loss of design margin resulting in a reasonable doubt regarding long term reliability. The PD was more than minor because if left uncorrected it would have the potential to result in a more significant event involving Unit 1 A train LHSI pump discharge nozzle failure from excessive stress. In accordance with NRC Inspection Manual Chapter 0609, Significant Determination Process, the inspectors performed a Phase 1 analysis and determined the finding was of very low safety significance or Green due to a design deficiency confirmed not to result in a loss of operability or functionality. The finding had no cross-cutting aspects due to its legacy nature. |
| Site: | North Anna  |
|---|---|
| Report | IR 05000338/2010002 Section 4OA5 |
| Date counted | Mar 31, 2010 (2010Q1) |
| Type: | NCV: Green |
| cornerstone | Mitigating Systems |
| Identified by: | NRC identified |
| Inspection Procedure: | |
| Inspectors (proximate) | R Clagg M Meeks G Laska J Reece |
| INPO aspect | |
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Finding - North Anna - IR 05000338/2010002 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (North Anna) @ 2010Q1
Self-Identified List (North Anna)
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