05000271/FIN-2010002-01
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Finding | |
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| Title | High Pressure Coolant Injection Inoperable Due to Spurious Suction Valve Swap and Technical Specification Actions Not Performed |
| Description | The inspectors identified an NCV of very low safety significance (Green) of technical specification 3.5.E, High Pressure Coolant Injection (HPCI) System, because Entergy staff failed to identify that HPCI was inoperable, enter the required limiting condition for operation, and immediately verify that the reactor core isolation cooling (RCIC) system was operable. Entergy initiated CR-VTY-2010-01420 and CR-VTY-2010-01506 to address the issues, issued standing orders to ensure HPCI and RCIC are considered inoperable when not aligned to the condensate storage and transfer system (CST), and initiated corrective actions to ensure design basis analysis associated with power uprate is properly incorporated into various documents, including technical specifications (TS) and the updated final safety analysis report (UFSAR). This finding is more than minor because it affected the equipment performance attribute of the Mitigating Systems cornerstone objective to ensure the availability, reliability, and capability of systems that respond to initiating events to prevent . undesirable consequences (i.e. core damage). Specifically, the availability of the CST to provide water for core cooling to HPCI during transient and emergency situations was affected. The inspectors determined the significance of the finding using IMC 0609, Appendix A, Determining the Significance of Reactor Inspection Findings for At-Power Situations. The finding was determined to be of very low safety significance (Green) because the exposure time associated with the HPCI suction valves being not properly aligned to the CST was 45 minutes, i.e. less than three days. The inspectors determined this finding had a cross-cutting aspect in the area of problem identification and resolution within the corrective action program (CAP) component because Entergy personnel did not completely and accurately identify the issues associated with HPCI being aligned to the torus instead of to the CST. (P.1(a) |
| Site: | Vermont Yankee File:NorthStar Vermont Yankee icon.png |
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| Report | IR 05000271/2010002 Section 1R12 |
| Date counted | Mar 31, 2010 (2010Q1) |
| Type: | NCV: Green |
| cornerstone | Initiating Events, Mitigating Systems |
| Identified by: | NRC identified |
| Inspection Procedure: | IP 71111.12 |
| Inspectors (proximate) | D Jackson S Rutenkroger H Jones D Spindler |
| CCA | P.1, Identification |
| INPO aspect | PI.1 |
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Finding - Vermont Yankee - IR 05000271/2010002 | |||||||||||||||||||||||||||||||||
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Finding List (Vermont Yankee) @ 2010Q1
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