05000298/FIN-2012005-05
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Finding | |
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Title | Failure to Maintain Design Control of the Service Water Booster Pumps |
Description | The inspectors documented a self-revealing, non-cited violation of 10 CFR Part 50, Appendix B, Criterion III, Design Control, associated with the licensees failure to correctly translate certain parts of the design bases into installed plant equipment. Specifically, the licensee failed to ensure that unused flushing ports on the service water booster pump casing were either welded, or not installed, during procurement. This failure resulted in the licensee installing a new service water booster pump with unused flushing ports that were not welded during installation of service water booster pump D, which resulted in degradation of the pumps casing and the pump not being able to perform its specified safety function. The licensee entered this deficiency into their corrective action program for resolution as Condition Reports CR-CNS-2012-07365 and CR-CNS-2012-07378. The failure to maintain design control of the service water booster pumps was a performance deficiency. This performance deficiency was determined to be more than minor, and is therefore a finding, because it was associated with the design control attribute of the Mitigating Systems Cornerstone, in that the licensee installed a service water booster pump with an unused flushing port not welded, which resulted in degradation of the pumps casing and the pump not being able to perform its specified safety function, and thereby affecting the associated cornerstone objective to ensure availability, reliability, and capability of systems that respond to initiating events to prevent undesirable consequences. The inspectors evaluated the finding using Inspection Manual Chapter 0609, Appendix G, Shutdown Operations Significance Determination Process, Checklist 7, BWR Refueling Operation with RCS Level > 23\', and determined that the finding is of very low safety significance (Green) because the finding did not require a quantitative risk assessment because adequate mitigating equipment remained available and the finding did not constitute a loss of shutdown cooling, as defined in Appendix G. The finding was determined to have a cross-cutting aspect in the area of problem identification and resolution associated with the corrective action component because the licensee failed to thoroughly evaluate concerns with whether or not the unused flushing ports on service water booster pump D should be welded. |
Site: | Cooper |
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Report | IR 05000298/2012005 Section 1R20 |
Date counted | Dec 31, 2012 (2012Q4) |
Type: | NCV: Green |
cornerstone | Mitigating Systems |
Identified by: | Self-revealing |
Inspection Procedure: | IP 71111.2 |
Inspectors (proximate) | J Melfi J Josey J Laughlin D Proulx T Buchanan N Greene T Farina C Henderson S Garchow |
CCA | P.2, Evaluation |
INPO aspect | PI.2 |
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Finding - Cooper - IR 05000298/2012005 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Cooper) @ 2012Q4
Self-Identified List (Cooper)
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