Event Notification Report for November 03, 2013
U.S. Nuclear Regulatory Commission
Operations Center
EVENT REPORTS FOR
11/02/2013 - 11/03/2013
Power Reactor
Event Number: 49498
Facility: MILLSTONE
Region: 1 State: CT
Unit: [] [2] []
RX Type: [1] GE-3,[2] CE,[3] W-4-LP
NRC Notified By: STEPHAN LAMBERT
HQ OPS Officer: MARK ABRAMOVITZ
Region: 1 State: CT
Unit: [] [2] []
RX Type: [1] GE-3,[2] CE,[3] W-4-LP
NRC Notified By: STEPHAN LAMBERT
HQ OPS Officer: MARK ABRAMOVITZ
Notification Date: 11/03/2013
Notification Time: 09:15 [ET]
Event Date: 11/03/2013
Event Time: 06:00 [EST]
Last Update Date: 11/03/2013
Notification Time: 09:15 [ET]
Event Date: 11/03/2013
Event Time: 06:00 [EST]
Last Update Date: 11/03/2013
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):
PAUL KROHN (R1DO)
PAUL KROHN (R1DO)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 2 | N | Y | 100 | Power Operation | 100 | Power Operation |
MAIN STEAM LINE RADIATION MONITOR OUT OF SERVICE
"At 0600 [EST] on 11/3/2013 main steamline radiation monitor RM4299A failed to zero and is not available. It is undetermined at this time how long the radiation monitor will be out of service. This action is reportable as a loss of assessment capability in accordance with 10CFR50.72(b)(3)(xiii)."
The licensee notified the NRC Resident Inspector, and state, and local governments.
"At 0600 [EST] on 11/3/2013 main steamline radiation monitor RM4299A failed to zero and is not available. It is undetermined at this time how long the radiation monitor will be out of service. This action is reportable as a loss of assessment capability in accordance with 10CFR50.72(b)(3)(xiii)."
The licensee notified the NRC Resident Inspector, and state, and local governments.
Power Reactor
Event Number: 49688
Facility: SAINT LUCIE
Region: 2 State: FL
Unit: [1] [] []
RX Type: [1] CE,[2] CE
NRC Notified By: REESE KILIAN
HQ OPS Officer: STEVE SANDIN
Region: 2 State: FL
Unit: [1] [] []
RX Type: [1] CE,[2] CE
NRC Notified By: REESE KILIAN
HQ OPS Officer: STEVE SANDIN
Notification Date: 01/02/2014
Notification Time: 12:14 [ET]
Event Date: 11/03/2013
Event Time: 03:23 [EST]
Last Update Date: 01/02/2014
Notification Time: 12:14 [ET]
Event Date: 11/03/2013
Event Time: 03:23 [EST]
Last Update Date: 01/02/2014
Emergency Class: NON EMERGENCY
10 CFR Section:
50.73(a)(1) - INVALID SPECIF SYSTEM ACTUATION
10 CFR Section:
50.73(a)(1) - INVALID SPECIF SYSTEM ACTUATION
Person (Organization):
ROBERT HAAG (R2DO)
ROBERT HAAG (R2DO)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 1 | N | N | 0 | Hot Standby | 0 | Hot Standby |
60-DAY REPORT INVOLVING AN INVALID PARTIAL ACTUATION OF UNIT 1 EDG "1A" DUE TO A FAILED RELAY
"This report is being made under 10 CFR 50.73(a)(2)(iv)(A) as an invalid actuation of Emergency Diesel Generator (EDG) 1A in lieu of a 60-day LER. Per NUREG-1022, the following information is provided:
"The specific train and system that were actuated:
"At 0323 hours [EST] on November 3, 2013, the St. Lucie Unit 1 train 'A' EDG automatically started. Troubleshooting revealed that the ESF-A group 7 actuation relay (K507A) failed, providing an invalid Engineered Safety Feature (ESF) 'start' signal to EDG 1A, and the EDG started and operated in the standby mode. The failed relay was replaced, and the post maintenance test was successful.
"Was train actuation complete or partial?
"This was a partial actuation of the 'A' train emergency power system as the 1A EDG output breaker did not close, by design, with power on the emergency busses.
"Did the system start and function correctly?
"The failed 7A actuation relay provided an invalid start signal to EDG 1A that properly responded to the start signal. The EDG output breaker closing logic prevented closure because the 4160 VAC emergency bus was energized at the time the actuation relay failed. The system started and functioned as would be expected for the existing plant conditions."
The licensee informed the NRC Resident Inspector. Notified R2DO (Haag).
"This report is being made under 10 CFR 50.73(a)(2)(iv)(A) as an invalid actuation of Emergency Diesel Generator (EDG) 1A in lieu of a 60-day LER. Per NUREG-1022, the following information is provided:
"The specific train and system that were actuated:
"At 0323 hours [EST] on November 3, 2013, the St. Lucie Unit 1 train 'A' EDG automatically started. Troubleshooting revealed that the ESF-A group 7 actuation relay (K507A) failed, providing an invalid Engineered Safety Feature (ESF) 'start' signal to EDG 1A, and the EDG started and operated in the standby mode. The failed relay was replaced, and the post maintenance test was successful.
"Was train actuation complete or partial?
"This was a partial actuation of the 'A' train emergency power system as the 1A EDG output breaker did not close, by design, with power on the emergency busses.
"Did the system start and function correctly?
"The failed 7A actuation relay provided an invalid start signal to EDG 1A that properly responded to the start signal. The EDG output breaker closing logic prevented closure because the 4160 VAC emergency bus was energized at the time the actuation relay failed. The system started and functioned as would be expected for the existing plant conditions."
The licensee informed the NRC Resident Inspector. Notified R2DO (Haag).