05000298/FIN-2012004-04
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Finding | |
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Title | Failure to Control Vendor Changes to a Service Water Booster Pump |
Description | The inspectors identified a non-cited violation of 10 CFR Part 50, Appendix B, Criterion V, Instructions, Procedures, and Drawings, associated with the failure of the licensee to appropriately implement their configuration control process which resulted in unevaluated changes to the service water booster pumps. Specifically, the licensee allowed their vendor to make undocumented changes to service water booster pumps, which resulted in a pump not being able to perform its specified safety function. The licensee entered this issue in their corrective action program as Condition Reports CR-CNS-2012-04600 and CR-CNS-2012-04628. The failure to appropriately implement the stations configuration control process with respect to vendor changes to a service water booster pump 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 equipment performance attribute of the Mitigating Systems Cornerstone, in that unevaluated changes to a service water booster pump resulted in the pump not being able to perform it specified safety function, thereby affecting the associated cornerstone objective to ensure availability, reliability, and capability of systems that respond to initiating events to prevent undesirable consequences. Using Inspection Manual Chapter 0609, Appendix A, The Significance Determination Process For Findings At-Power, the finding was determined to be of very low safety significance (Green) because the finding: (1) was not a deficiency affecting the design or qualification of a mitigating structure, system, or component and did not result in a loss of operability or functionality; (2) did not represent a loss of system and/or function; (3) did not represent an actual loss of function of at least a single train for longer than its technical specification allowed outage time, or two separate safety systems out-of-service for longer than its technical specification allowed outage time; and (4) did not represent an actual loss of function of one or more non-technical specification trains of equipment designated as high safety-significance in accordance with the licensees maintenance rule program. The inspectors determined that the apparent cause of this finding was that the the licensee had decided to rely on purchase orders and vendor repair plans instead of evaluating configuration changes. Therefore, the finding has a cross-cutting aspect in the area of human performance associated with the decision-making component because the licensee failed to use conservative assumptions in decision-making and adopt a requirement to demonstrate that the proposed action is safe in order to proceed rather than a requirement to demonstrate it is unsafe in order to disapprove the action. |
Site: | Cooper |
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Report | IR 05000298/2012004 Section 1R13 |
Date counted | Sep 30, 2012 (2012Q3) |
Type: | NCV: Green |
cornerstone | Mitigating Systems |
Identified by: | NRC identified |
Inspection Procedure: | IP 71111.13 |
Inspectors (proximate) | J Josey J Laughlin P Elkmann R Hagar A Fairbanks C Henderson G Guerra |
CCA | H.14, Conservative Bias |
INPO aspect | DM.2 |
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Finding - Cooper - IR 05000298/2012004 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Cooper) @ 2012Q3
Self-Identified List (Cooper)
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