Event Notification Report for April 01, 2005
U.S. Nuclear Regulatory Commission
Operations Center
EVENT REPORTS FOR
03/31/2005 - 04/01/2005
EVENT NUMBERS
41558
Power Reactor
Event Number: 41558
Facility: GINNA
Region: 1 State: NY
Unit: [1] [] []
RX Type: [1] W-2-LP
NRC Notified By: KEVIN McLAUGHLIN
HQ OPS Officer: MARK ABRAMOVITZ
Region: 1 State: NY
Unit: [1] [] []
RX Type: [1] W-2-LP
NRC Notified By: KEVIN McLAUGHLIN
HQ OPS Officer: MARK ABRAMOVITZ
Notification Date: 04/01/2005
Notification Time: 16:30 [ET]
Event Date: 04/01/2005
Event Time: 14:02 [EST]
Last Update Date: 04/01/2005
Notification Time: 16:30 [ET]
Event Date: 04/01/2005
Event Time: 14:02 [EST]
Last Update Date: 04/01/2005
Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(3)(iv)(A) - VALID SPECIF SYS ACTUATION
10 CFR Section:
50.72(b)(3)(iv)(A) - VALID SPECIF SYS ACTUATION
Person (Organization):
JAMES TRAPP (R1)
JAMES TRAPP (R1)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 1 | N | N | 0 | Refueling | 0 | Refueling |
EMERGENCY DIESEL GENERATOR START DUE TO A PARTIAL LOSS OF OFFSITE POWER
The following information was provided by the licensee via fax (licensee text in quotes):
"With the plant in mode 6 and refueling operations in progress, a loss of offsite power circuit 751 occurred. This loss of power caused an undervoltage condition on safeguards busses 16 and 17 and an automatic start of Emergency Diesel Generator 1B. Both of these busses were subsequently energized by the diesel. Refueling operations in progress were immediately halted. Core cooling was momentarily interrupted and restored upon safeguards bus reenergization. The spent fuel pool cooling loop in operation was powered from the opposite train and hence was not interrupted. RCS temperature was maintained at 74 degrees Fahrenheit and spent fuel pool temperature was also at 74 degrees Fahrenheit throughout the event."
This partial loss of power was due to a substation transformer fault (one of two offsite power sources were lost).
The licensee notified the NRC Resident Inspector.
The following information was provided by the licensee via fax (licensee text in quotes):
"With the plant in mode 6 and refueling operations in progress, a loss of offsite power circuit 751 occurred. This loss of power caused an undervoltage condition on safeguards busses 16 and 17 and an automatic start of Emergency Diesel Generator 1B. Both of these busses were subsequently energized by the diesel. Refueling operations in progress were immediately halted. Core cooling was momentarily interrupted and restored upon safeguards bus reenergization. The spent fuel pool cooling loop in operation was powered from the opposite train and hence was not interrupted. RCS temperature was maintained at 74 degrees Fahrenheit and spent fuel pool temperature was also at 74 degrees Fahrenheit throughout the event."
This partial loss of power was due to a substation transformer fault (one of two offsite power sources were lost).
The licensee notified the NRC Resident Inspector.