NRC Receives Event Notification on Invalid Specified System Actuation
June 23, 2017
June 23, 2017
WASHINGTON, June 23 -- The Nuclear Regulatory Commission issued the following event notification (52818) involving Hatch nuclear plant, Georgia:
INVALID SPECIFIED SYSTEM ACTUATION DUE TO FAILED RELAY
"On April 27, 2017 at 0029 EDT, Unit 2 received an invalid partial Group 2 isolation due to a failed relay (2D11-K80) on the auxiliary trip unit. Both of the U1 and U2 Standby Gas Treatment (SGT) trains started and the U2 Group II primary containment and all second . . .
INVALID SPECIFIED SYSTEM ACTUATION DUE TO FAILED RELAY
"On April 27, 2017 at 0029 EDT, Unit 2 received an invalid partial Group 2 isolation due to a failed relay (2D11-K80) on the auxiliary trip unit. Both of the U1 and U2 Standby Gas Treatment (SGT) trains started and the U2 Group II primary containment and all second . . .