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During the current Unit 2 fifteenth refuel … During the current Unit 2 fifteenth refueling outage (2R15), with the core off-loaded to the spent fuel pool, the containment recirculation sump valve interlock position switches were found not to perform correctly. Initial investigation has determined that the valve position sensing interlock switches were left incorrectly set during the Unit 2 fourteenth refueling outage (2R14).</br>In the event of a Loss of Coolant Accident, (LOCA) this condition would have prevented Residual Heat Removal (RHR) flow from reaching containment spray, high head and intermediate head safety injection pumps following alignment to long term recirculation from the containment sump without additional operator action.</br>The RHR function, including the long term recirculation from the containment sump, was not adversely affected by this condition. Also, containment spray, high head and intermediate head safety injection from the refueling water storage tank (RWST) was not adversely affected by this condition.</br>Unit 2 containment recirculation sump valve interlock position switches have been correctly set and are being retested during the current 2R15.</br>Unit 1 containment recirculation sump valve interlock position switches have been verified as correctly set to be capable of performing their design function by testing performed during the last refueling outage.</br>This condition will be reported in a Licensee Event Report (LER) within 60 days in accordance with 10 CFR 50.73(a)(2)(ii).</br>The licensee notified the NRC Resident Inspector.ensee notified the NRC Resident Inspector. +
15:00:00, 23 October 2009 +
45,461 +
17:44:00, 23 October 2009 +
15:00:00, 23 October 2009 +
During the current Unit 2 fifteenth refuel … During the current Unit 2 fifteenth refueling outage (2R15), with the core off-loaded to the spent fuel pool, the containment recirculation sump valve interlock position switches were found not to perform correctly. Initial investigation has determined that the valve position sensing interlock switches were left incorrectly set during the Unit 2 fourteenth refueling outage (2R14).</br>In the event of a Loss of Coolant Accident, (LOCA) this condition would have prevented Residual Heat Removal (RHR) flow from reaching containment spray, high head and intermediate head safety injection pumps following alignment to long term recirculation from the containment sump without additional operator action.</br>The RHR function, including the long term recirculation from the containment sump, was not adversely affected by this condition. Also, containment spray, high head and intermediate head safety injection from the refueling water storage tank (RWST) was not adversely affected by this condition.</br>Unit 2 containment recirculation sump valve interlock position switches have been correctly set and are being retested during the current 2R15.</br>Unit 1 containment recirculation sump valve interlock position switches have been verified as correctly set to be capable of performing their design function by testing performed during the last refueling outage.</br>This condition will be reported in a Licensee Event Report (LER) within 60 days in accordance with 10 CFR 50.73(a)(2)(ii).</br>The licensee notified the NRC Resident Inspector.ensee notified the NRC Resident Inspector. +
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00:00:00, 23 October 2009 +
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22:31:27, 24 September 2017 +
17:44:00, 23 October 2009 +
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0.114 d (2.73 hours, 0.0162 weeks, 0.00374 months) +
15:00:00, 23 October 2009 +
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