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 Entered dateEvent description
ENS 4132311 January 2005 09:20:00At 0719 EST, Vogtle Unit 1 tripped from 100% power due to a Turbine Trip/P9 Reactor Trip, RPS actuation. Initial investigation indicates that Generator relaying was involved. The investigation is ongoing. As expected for the trip, both Motor Driven Auxiliary Feedwater pumps and the Turbine Driven pump started on Lo-Lo Steam Generator level and AMSAC. All equipment actuated as expected except the Group A Pressurizer Heaters tripped. Technical Specification 3.4.9 Condition B was entered. All control rods fully inserted. Decay heat is being removed via the steam dumps to the main condenser. The electrical grid is stable. The licensee notified the NRC Resident Inspectors.