Nuclear Event: Manual Reactor SCRAM, Vogtle Electric Generating Plant, Georgia
Nuclear Event in USA on Friday, 03 February, 2017 at 15:45 [EST]
North America – USA | State of Georgia, Burke County – Vogtle Electric Generating Plant, Unit 1
Location: 33°08’36.0″N 81°45’38.0″W
Present Operational Age: ~30 years
Event: RPS ACTUATION – CRITICAL – NON EMERGENCY
UNIT 1 MANUAL REACTOR TRIP DUE TO LOOP 1 MSIV STARTING TO FAIL CLOSED
“At 1545 EST on 2/3/17, Vogtle Unit 1 was manually tripped from 100% power when loop 1 Main Steam Isolation Valve (MSIV) started to fail closed. Non-Safety Related 4160V bus 1NA01 failed to transfer to alternate incoming power supply automatically and was successfully manually energized.
“All control rods fully inserted and AFW [Auxiliary Feedwater] and FWI [Feedwater Isolation] actuated as expected.
“Unit 1 is in Mode 3 and stable with decay heat being removed by AFW.”
The licensee informed the NRC Resident Inspector.