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At 2200 (EST) 12/09/2010, Unit 4 had indic … At 2200 (EST) 12/09/2010, Unit 4 had indication of a condenser tube leak. A power reduction was commenced in accordance with plant procedures to allow isolation of the leaking waterbox. Sodium levels in the Steam Generators increased and a unit shutdown was required. Power was reduced to 20% and a manual reactor trip was initiated at 2258 (EST) 12/09/10, in accordance with plant procedures. All systems operated as required and the unit is stable in mode 3.</br>The reactor trip was not complicated. All control rods inserted fully and decay heat is being removed by the atmospheric steam dumps. There is no indications of primary to secondary leakage. Normal offsite power is available and Unit 3 is unaffected. 3 of 3 steam generators are affected by the increase in sodium levels. The licensee is in progress of conducting steam generator blowdowns. </br>The licensee has notified the NRC Resident Inspector.e has notified the NRC Resident Inspector. +
03:58:00, 10 December 2010 +
46,471 +
01:25:00, 10 December 2010 +
03:58:00, 10 December 2010 +
At 2200 (EST) 12/09/2010, Unit 4 had indic … At 2200 (EST) 12/09/2010, Unit 4 had indication of a condenser tube leak. A power reduction was commenced in accordance with plant procedures to allow isolation of the leaking waterbox. Sodium levels in the Steam Generators increased and a unit shutdown was required. Power was reduced to 20% and a manual reactor trip was initiated at 2258 (EST) 12/09/10, in accordance with plant procedures. All systems operated as required and the unit is stable in mode 3.</br>The reactor trip was not complicated. All control rods inserted fully and decay heat is being removed by the atmospheric steam dumps. There is no indications of primary to secondary leakage. Normal offsite power is available and Unit 3 is unaffected. 3 of 3 steam generators are affected by the increase in sodium levels. The licensee is in progress of conducting steam generator blowdowns. </br>The licensee has notified the NRC Resident Inspector.e has notified the NRC Resident Inspector. +
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