05000423/FIN-2014002-01
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Finding | |
|---|---|
| Title | Failure to Evaluate Test Results Outside of Acceptance Criteria For A Service Water Pump |
| Description | The inspectors identified a Green NCV of Title 10 of the Code of Federal Regulations (10 CFR) 50, Appendix B, Criterion XI, Test Control, because Dominion did not properly evaluate test results outside of the acceptance criteria for the Unit 3 A service water (SW) pump. Specifically, on February 23, when the A SW pump did not meet its acceptance criteria for running amps, Dominion did not fully evaluate pump operability under all conditions. Dominions immediate corrective actions included entering the issue into their corrective action program (CAP) and placing the pump in pull to lock status until the issue could be resolved. The inspectors determined that Dominions failure to properly evaluate test results outside of the acceptance criteria for the A SW pump in accordance with the requirements of 10 CFR 50, Appendix B, Criterion XI, to assure that test requirements have been satisfied was a performance deficiency that was within Dominions ability to foresee and correct, and should have been prevented. This finding is more than minor because it is associated with the equipment performance attribute of the Mitigating Systems cornerstone and affected the cornerstone objective to ensure the availability, reliability, and capability of systems that respond to initiating events to prevent undesirable consequences. Specifically, without proper evaluation of the test results, Dominion kept a component in service that was later determined to be non-functional. In accordance with IMC 0609.04, Initial Characterization of Findings, and Exhibit 2 of IMC 0609, Appendix A, The Significance Determination Process for Findings At-Power, issued June 19, 2012, the inspectors determined that this finding is of very low safety significance (Green) because the performance deficiency was not a design or qualification deficiency, did not involve an actual loss of safety function, did not represent actual loss of a safety function of a single train for greater than its technical specification (TS) allowed outage time, and did not screen as potentially risk-significant due to a seismic, flooding, or severe weather initiating event, and did not represent an actual loss of function of a non-TS train of equipment designated as high safety significant. This finding has a cross-cutting aspect in the area of Human Performance, Design Margins, in that Dominion did not operate and maintain the pump within design margins, where margins are carefully guarded and changed only through a systematic and rigorous process. |
| Site: | Millstone  |
|---|---|
| Report | IR 05000423/2014002 Section 1R15 |
| Date counted | Mar 31, 2014 (2014Q1) |
| Type: | NCV: Green |
| cornerstone | Mitigating Systems |
| Identified by: | NRC identified |
| Inspection Procedure: | IP 71111.15 |
| Inspectors (proximate) | B Haagensen E Andrews J Ambrosini J Krafty J Richmond R Mckinley |
| Violation of: | Technical Specification 10 CFR 50 Appendix B Criterion XI |
| CCA | H.6, Design Margins |
| INPO aspect | WP.2 |
| Finding closed by | |
| IR 05000245/2014008 (28 August 2014) | |
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Finding - Millstone - IR 05000423/2014002 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Millstone) @ 2014Q1
Self-Identified List (Millstone)
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