Event Notification Report for June 01, 2014
U.S. Nuclear Regulatory Commission
Operations Center
EVENT REPORTS FOR
05/31/2014 - 06/01/2014
EVENT NUMBERS
50162
Power Reactor
Event Number: 50162
Facility: BRAIDWOOD
Region: 3 State: IL
Unit: [1] [2] []
RX Type: [1] W-4-LP,[2] W-4-LP
NRC Notified By: JOHN LOGAN
HQ OPS Officer: DONG HWA PARK
Region: 3 State: IL
Unit: [1] [2] []
RX Type: [1] W-4-LP,[2] W-4-LP
NRC Notified By: JOHN LOGAN
HQ OPS Officer: DONG HWA PARK
Notification Date: 06/01/2014
Notification Time: 17:51 [ET]
Event Date: 06/01/2014
Event Time: 13:14 [CDT]
Last Update Date: 06/01/2014
Notification Time: 17:51 [ET]
Event Date: 06/01/2014
Event Time: 13:14 [CDT]
Last Update Date: 06/01/2014
Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(3)(xiii) - LOSS COMM/ASMT/RESPONSE
10 CFR Section:
50.72(b)(3)(xiii) - LOSS COMM/ASMT/RESPONSE
Person (Organization):
ANN MARIE STONE (R3DO)
ANN MARIE STONE (R3DO)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 1 | N | Y | 100 | Power Operation | 100 | Power Operation |
| 2 | N | Y | 100 | Power Operation | 100 | Power Operation |
LOSS OF TECHNICAL SUPPORT CENTER COOLING CAPABILITY
"At 1314 [CDT] on 6/01/2014, Technical Support Center ventilation alarm was received in the main control room. The Equipment Operator reported that the trouble alarm for the roof mounted condensing units was in alarm and the condensing units were tripped. Upon resetting the alarms the condensing units ran for three to five minutes and tripped again. This caused a loss of Technical Support Center cooling capability. Technical Support Center Air Handling system and filtration remain in operation. The room temperature is being monitored locally. Wet bulb temperature at 1500 [CDT] was reported to be 78.5 deg F. Corrective action process has been initiated.
"This event is reportable under 10CFR50.72(b)(3)(xiii) as described in NUREG-1022, Rev. 3 since this condition affects an emergency response facility."
The licensee has notified the NRC Resident Inspector.
"At 1314 [CDT] on 6/01/2014, Technical Support Center ventilation alarm was received in the main control room. The Equipment Operator reported that the trouble alarm for the roof mounted condensing units was in alarm and the condensing units were tripped. Upon resetting the alarms the condensing units ran for three to five minutes and tripped again. This caused a loss of Technical Support Center cooling capability. Technical Support Center Air Handling system and filtration remain in operation. The room temperature is being monitored locally. Wet bulb temperature at 1500 [CDT] was reported to be 78.5 deg F. Corrective action process has been initiated.
"This event is reportable under 10CFR50.72(b)(3)(xiii) as described in NUREG-1022, Rev. 3 since this condition affects an emergency response facility."
The licensee has notified the NRC Resident Inspector.