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A reactor trip occurred at 1305 EDT and a … A reactor trip occurred at 1305 EDT and a Connecticut "echo" event was declared at 1315 EDT. The load dispatcher reported a loss of a 115 kV line at the time of the trip which may have caused and/or contributed to the turbine trip. The turbine trip may have resulted from a loss of B12 MCC (motor control center) which carries stator cooling pumps or a momentary interruption to non-vital instrument panels VR11 and VR21.</br>The following events occurred:</br>1) loss of non-vital power may have caused the turbine trip,</br>2) RPS (Reactor Protective System) actuation from turbine trip,</br>3) system operator reported brief loss of 115 kV line immediately prior to trip,</br>4) Primary PORV (Pilot Operated Relief Valve on the pressurizer) lifted (at its setpoint of 2397psia),</br>5) Steam generators reached a high level, and</br>6) Main feed pump manually tripped due to high steam generator level and manually started AFW pumps (Auxiliary Feedwater Pumps).</br>Note: The 'C' charging pump was inoperable at the time of the event.</br>All control rods fully inserted on the trip. The plant is in its normal shutdown electrical lineup. Decay heat is being dumped to the main condenser and steam generator level is being maintained with the AFW pumps. There was no effect on Unit-3.</br>The licensee notified the NRC Resident Inspector.ensee notified the NRC Resident Inspector. +
17:05:00, 3 July 2009 +
45,183 +
14:32:00, 3 July 2009 +
17:05:00, 3 July 2009 +
A reactor trip occurred at 1305 EDT and a … A reactor trip occurred at 1305 EDT and a Connecticut "echo" event was declared at 1315 EDT. The load dispatcher reported a loss of a 115 kV line at the time of the trip which may have caused and/or contributed to the turbine trip. The turbine trip may have resulted from a loss of B12 MCC (motor control center) which carries stator cooling pumps or a momentary interruption to non-vital instrument panels VR11 and VR21.</br>The following events occurred:</br>1) loss of non-vital power may have caused the turbine trip,</br>2) RPS (Reactor Protective System) actuation from turbine trip,</br>3) system operator reported brief loss of 115 kV line immediately prior to trip,</br>4) Primary PORV (Pilot Operated Relief Valve on the pressurizer) lifted (at its setpoint of 2397psia),</br>5) Steam generators reached a high level, and</br>6) Main feed pump manually tripped due to high steam generator level and manually started AFW pumps (Auxiliary Feedwater Pumps).</br>Note: The 'C' charging pump was inoperable at the time of the event.</br>All control rods fully inserted on the trip. The plant is in its normal shutdown electrical lineup. Decay heat is being dumped to the main condenser and steam generator level is being maintained with the AFW pumps. There was no effect on Unit-3.</br>The licensee notified the NRC Resident Inspector.ensee notified the NRC Resident Inspector. +
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