Event Notification Report for September 25, 2013
U.S. Nuclear Regulatory Commission
Operations Center
EVENT REPORTS FOR
09/24/2013 - 09/25/2013
Power Reactor
Event Number: 49383
Facility: DUANE ARNOLD
Region: 3 State: IA
Unit: [1] [] []
RX Type: [1] GE-4
NRC Notified By: MIKE STROPE
HQ OPS Officer: DANIEL MILLS
Region: 3 State: IA
Unit: [1] [] []
RX Type: [1] GE-4
NRC Notified By: MIKE STROPE
HQ OPS Officer: DANIEL MILLS
Notification Date: 09/25/2013
Notification Time: 11:08 [ET]
Event Date: 09/25/2013
Event Time: 03:04 [CDT]
Last Update Date: 11/02/2013
Notification Time: 11:08 [ET]
Event Date: 09/25/2013
Event Time: 03:04 [CDT]
Last Update Date: 11/02/2013
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):
BILLY DICKSON (R3DO)
BILLY DICKSON (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 |
LOSS OF NORMAL TSC POWER DUE TO TRANSFORMER ISOLATION
"At 0304 (CDT), on Sept 25, 2013, the Duane Arnold Energy Center (DAEC) Technical Support Center (TSC) normal power supply was lost when the T4 '36KV-12.5KV DAEC SITE TRANSFORMER' was lost. Automatic power transfer occurred to maintain power to the TSC from the TSC Emergency Diesel Generator (EDG) which automatically started. Prior to the loss of normal power, the TSC Emergency Diesel Generator maintenance functional testing had been completed and was in standby readiness, awaiting post maintenance testing to be completed on the auto start circuit. The TSC Emergency Diesel Generator responded normally to the loss of power and energized TSC loads. The TSC remained functional throughout the incident.
"This notification is being made pursuant to 10 CFR 50.72(b)(3)(xiii) due to the loss of an emergency assessment capability. An update will be provided once the normal power supply has been restored."
The NRC Resident Inspector has been notified.
* * * UPDATE FROM STEVE SPEIRS TO HOWIE CROUCH AT 1844 EDT ON 11/2/13 * * *
The TSC normal power supply was returned to service at 1830 EDT on 11/2/13. The licensee will be notifying the NRC Resident Inspector.
Notified R3DO (Daley).
"At 0304 (CDT), on Sept 25, 2013, the Duane Arnold Energy Center (DAEC) Technical Support Center (TSC) normal power supply was lost when the T4 '36KV-12.5KV DAEC SITE TRANSFORMER' was lost. Automatic power transfer occurred to maintain power to the TSC from the TSC Emergency Diesel Generator (EDG) which automatically started. Prior to the loss of normal power, the TSC Emergency Diesel Generator maintenance functional testing had been completed and was in standby readiness, awaiting post maintenance testing to be completed on the auto start circuit. The TSC Emergency Diesel Generator responded normally to the loss of power and energized TSC loads. The TSC remained functional throughout the incident.
"This notification is being made pursuant to 10 CFR 50.72(b)(3)(xiii) due to the loss of an emergency assessment capability. An update will be provided once the normal power supply has been restored."
The NRC Resident Inspector has been notified.
* * * UPDATE FROM STEVE SPEIRS TO HOWIE CROUCH AT 1844 EDT ON 11/2/13 * * *
The TSC normal power supply was returned to service at 1830 EDT on 11/2/13. The licensee will be notifying the NRC Resident Inspector.
Notified R3DO (Daley).
Power Reactor
Event Number: 49384
Facility: MILLSTONE
Region: 1 State: CT
Unit: [] [2] []
RX Type: [1] GE-3,[2] CE,[3] W-4-LP
NRC Notified By: WALTER ORF
HQ OPS Officer: DANIEL MILLS
Region: 1 State: CT
Unit: [] [2] []
RX Type: [1] GE-3,[2] CE,[3] W-4-LP
NRC Notified By: WALTER ORF
HQ OPS Officer: DANIEL MILLS
Notification Date: 09/25/2013
Notification Time: 11:54 [ET]
Event Date: 09/25/2013
Event Time: 10:06 [EDT]
Last Update Date: 09/25/2013
Notification Time: 11:54 [ET]
Event Date: 09/25/2013
Event Time: 10:06 [EDT]
Last Update Date: 09/25/2013
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):
BLAKE WELLING (R1DO)
BLAKE WELLING (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 |
STACK RADIATION MONITOR REMOVED FROM SERVICE FOR PLANNED MAINTENANCE
"The Millstone Power Station Unit 2 High Range Stack Radiation Monitor, RM-8168 is being removed from service for preplanned maintenance. The radiation monitor is estimated to be out of service for approximately 6 hours. This action is reportable as a loss of assessment capability in accordance with 10 CFR 50.72(b)(3)(xiii)."
The NRC Resident Inspector has been notified. State and local authorities were notified by the licensee.
"The Millstone Power Station Unit 2 High Range Stack Radiation Monitor, RM-8168 is being removed from service for preplanned maintenance. The radiation monitor is estimated to be out of service for approximately 6 hours. This action is reportable as a loss of assessment capability in accordance with 10 CFR 50.72(b)(3)(xiii)."
The NRC Resident Inspector has been notified. State and local authorities were notified by the licensee.
Power Reactor
Event Number: 49386
Facility: NINE MILE POINT
Region: 1 State: NY
Unit: [] [2] []
RX Type: [1] GE-2,[2] GE-5
NRC Notified By: MARK GREER
HQ OPS Officer: JOHN SHOEMAKER
Region: 1 State: NY
Unit: [] [2] []
RX Type: [1] GE-2,[2] GE-5
NRC Notified By: MARK GREER
HQ OPS Officer: JOHN SHOEMAKER
Notification Date: 09/25/2013
Notification Time: 21:20 [ET]
Event Date: 09/25/2013
Event Time: 15:30 [EDT]
Last Update Date: 09/25/2013
Notification Time: 21:20 [ET]
Event Date: 09/25/2013
Event Time: 15:30 [EDT]
Last Update Date: 09/25/2013
Emergency Class: NON EMERGENCY
10 CFR Section:
10 CFR Section:
Person (Organization):
BLAKE WELLING (R1DO)
BLAKE WELLING (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 |
ENVIRONMENTAL IMPACT DURING SERVICE WATER MOLLUSK BIOCIDE TREATMENT
"During Service Water mollusk biocide treatment, divers in Lake Ontario found approximately 20 Goby fish dead near the intake structure. Nine Mile Point Unit 2 Operating License Appendix B, Environmental Protection Plan, paragraph 4.1 requires a 24-hour notification of any occurrence of an unusual or important event that indicates or could result in significant environmental impact causally related [to] plant operations. This fish kill may have been caused by the chemical injection line being dislodged above the intake structure. Chemical injection was secured when the mispositioned line was discovered. The New York State DEC [Department of Environmental Conservation] was notified in a related report of the unexpected injection site of the chemical.
"The NRC Resident inspector has been notified."
"During Service Water mollusk biocide treatment, divers in Lake Ontario found approximately 20 Goby fish dead near the intake structure. Nine Mile Point Unit 2 Operating License Appendix B, Environmental Protection Plan, paragraph 4.1 requires a 24-hour notification of any occurrence of an unusual or important event that indicates or could result in significant environmental impact causally related [to] plant operations. This fish kill may have been caused by the chemical injection line being dislodged above the intake structure. Chemical injection was secured when the mispositioned line was discovered. The New York State DEC [Department of Environmental Conservation] was notified in a related report of the unexpected injection site of the chemical.
"The NRC Resident inspector has been notified."