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At 1028 CST on the 9th of January, Unit 1 … At 1028 CST on the 9th of January, Unit 1 tripped due to turbine trip greater than 50% reactor power. The turbine trip was caused by a sudden pressure fault of the Unit 1 main generator output transformer (1MT1).</br>All systems operated as designed. All three auxiliary feedwater pumps auto-started as required. There were no complications noted on the reactor trip.</br>Current status: Holding in mode 3 and shutting down secondary equipment. Decay heat removal is via auxiliary feed and main condenser steam dumps.</br>All rods inserted during the trip. No relief or safety valves lifted during the transient. The electrical grid is stable and Unit 1 is in its' normal shutdown electrical lineup. Investigation of the transformer fault is underway. Unit 2 was unaffected by the transient.</br>The licensee will be notifying the NRC Resident Inspector.l be notifying the NRC Resident Inspector. +
16:28:00, 9 January 2010 +
45,617 +
12:14:00, 9 January 2010 +
16:28:00, 9 January 2010 +
At 1028 CST on the 9th of January, Unit 1 … At 1028 CST on the 9th of January, Unit 1 tripped due to turbine trip greater than 50% reactor power. The turbine trip was caused by a sudden pressure fault of the Unit 1 main generator output transformer (1MT1).</br>All systems operated as designed. All three auxiliary feedwater pumps auto-started as required. There were no complications noted on the reactor trip.</br>Current status: Holding in mode 3 and shutting down secondary equipment. Decay heat removal is via auxiliary feed and main condenser steam dumps.</br>All rods inserted during the trip. No relief or safety valves lifted during the transient. The electrical grid is stable and Unit 1 is in its' normal shutdown electrical lineup. Investigation of the transformer fault is underway. Unit 2 was unaffected by the transient.</br>The licensee will be notifying the NRC Resident Inspector.l be notifying the NRC Resident Inspector. +
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