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Today at approximately 0337 (EST), during … Today at approximately 0337 (EST), during quarterly turbine valve testing with reactor power at 100% of rated thermal power, the plant experienced reactor pressure control abnormalities. Reactor pressure rose to 1042 psig (at which point) the Operators inserted a manual SCRAM. The cause of the rise in reactor pressure is currently under investigation.</br>All control rods inserted into the core. Main steam isolation valves remained open, (however), bypass valves did not open as expected. The plant is in its normal electrical lineup and decay heat is being removed via isolation condensers. No electronic (EMRVs) or safety valves lifted during the transient. The plant is currently shutdown and all parameters are stable.</br>This event is reportable within 4 hours per 10CFR50.72(b)(2)(iv)(B) - 'any event or condition that results in actuation of the reactor protection system (RPS) when the reactor is critical except when the actuation results from and is part of a pre-planned sequence during testing or reactor operation.'</br>The licensee notified the NRC Resident Inspector and will be notifying the State.Inspector and will be notifying the State. +
08:37:00, 14 December 2013 +
49,633 +
06:57:00, 14 December 2013 +
08:37:00, 14 December 2013 +
Today at approximately 0337 (EST), during … Today at approximately 0337 (EST), during quarterly turbine valve testing with reactor power at 100% of rated thermal power, the plant experienced reactor pressure control abnormalities. Reactor pressure rose to 1042 psig (at which point) the Operators inserted a manual SCRAM. The cause of the rise in reactor pressure is currently under investigation.</br>All control rods inserted into the core. Main steam isolation valves remained open, (however), bypass valves did not open as expected. The plant is in its normal electrical lineup and decay heat is being removed via isolation condensers. No electronic (EMRVs) or safety valves lifted during the transient. The plant is currently shutdown and all parameters are stable.</br>This event is reportable within 4 hours per 10CFR50.72(b)(2)(iv)(B) - 'any event or condition that results in actuation of the reactor protection system (RPS) when the reactor is critical except when the actuation results from and is part of a pre-planned sequence during testing or reactor operation.'</br>The licensee notified the NRC Resident Inspector and will be notifying the State.Inspector and will be notifying the State. +
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