Event Notification Report for June 09, 2011
U.S. Nuclear Regulatory Commission
Operations Center
EVENT REPORTS FOR
06/08/2011 - 06/09/2011
Power Reactor
Event Number: 46941
Facility: COOPER
Region: 4 State: NE
Unit: [1] [] []
RX Type: [1] GE-4
NRC Notified By: JOHN MYERS
HQ OPS Officer: BILL HUFFMAN
Region: 4 State: NE
Unit: [1] [] []
RX Type: [1] GE-4
NRC Notified By: JOHN MYERS
HQ OPS Officer: BILL HUFFMAN
Notification Date: 06/09/2011
Notification Time: 14:00 [ET]
Event Date: 06/09/2011
Event Time: 09:20 [CDT]
Last Update Date: 06/09/2011
Notification Time: 14:00 [ET]
Event Date: 06/09/2011
Event Time: 09:20 [CDT]
Last Update Date: 06/09/2011
Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(2)(xi) - OFFSITE NOTIFICATION
10 CFR Section:
50.72(b)(2)(xi) - OFFSITE NOTIFICATION
Person (Organization):
JACK WHITTEN (R4DO)
JACK WHITTEN (R4DO)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 1 | N | Y | 100 | Power Operation | 100 | Power Operation |
OFFSITE NOTIFICATION CONCERNING INABILITY TO MEET SLUDGE POND DISCHARGE PERMIT DUE TO RIVER LEVELS
"Notification was made to the Nebraska Department of Environmental Quality regarding the inability to conform to the NPDES permit, since the discharges from the sludge pond to the Missouri River are uncontrolled at this time. As a result of high Missouri River levels, the sludge pond was overtopped. The discharges into this pond are subject to NPDES requirements. The inputs into the sludge pond are described in the NPDES permit as low volume wastewater. There are three outfalls which discharge into the pond. Outfall 002B is described as Clearwell Discharge plus Outfall 004 Emergency Overflow. Outfall 002C is described as Floor Drains. Outfall 004 is described as Reverse Osmosis Reject and Boiler Blowdown Waste streams. There is no radiological contamination in the pond.
"Additionally, the current and projected flooding conditions of the Missouri River high river levels have resulted in some media inquiries regarding potential changes in plant operation. Public information personnel and Management have responded to these inquiries with information on the impact of river level and preparations for additional actions should conditions warrant additional protective actions.
"Current river level is approximately 896 ft. MSL, three feet below the elevation which requires declaration of a NOUE, and approximately 4.8 feet below the crest of the 1993 flood, which was the highest flood recorded at the site. Current river elevation is 7 feet below grade elevation. A press release is not planned at this time. River level is currently projected to be 897.5 ft by Tuesday 6/14.
"Current river level is characterized as Moderate Flooding by the National Weather Service. There are currently no operational problems due to river conditions.
"The NRC Resident Inspector has been notified."
"Notification was made to the Nebraska Department of Environmental Quality regarding the inability to conform to the NPDES permit, since the discharges from the sludge pond to the Missouri River are uncontrolled at this time. As a result of high Missouri River levels, the sludge pond was overtopped. The discharges into this pond are subject to NPDES requirements. The inputs into the sludge pond are described in the NPDES permit as low volume wastewater. There are three outfalls which discharge into the pond. Outfall 002B is described as Clearwell Discharge plus Outfall 004 Emergency Overflow. Outfall 002C is described as Floor Drains. Outfall 004 is described as Reverse Osmosis Reject and Boiler Blowdown Waste streams. There is no radiological contamination in the pond.
"Additionally, the current and projected flooding conditions of the Missouri River high river levels have resulted in some media inquiries regarding potential changes in plant operation. Public information personnel and Management have responded to these inquiries with information on the impact of river level and preparations for additional actions should conditions warrant additional protective actions.
"Current river level is approximately 896 ft. MSL, three feet below the elevation which requires declaration of a NOUE, and approximately 4.8 feet below the crest of the 1993 flood, which was the highest flood recorded at the site. Current river elevation is 7 feet below grade elevation. A press release is not planned at this time. River level is currently projected to be 897.5 ft by Tuesday 6/14.
"Current river level is characterized as Moderate Flooding by the National Weather Service. There are currently no operational problems due to river conditions.
"The NRC Resident Inspector has been notified."
Power Reactor
Event Number: 46942
Facility: BRAIDWOOD
Region: 3 State: IL
Unit: [1] [2] []
RX Type: [1] W-4-LP,[2] W-4-LP
NRC Notified By: KEVIN LUESHEN
HQ OPS Officer: BILL HUFFMAN
Region: 3 State: IL
Unit: [1] [2] []
RX Type: [1] W-4-LP,[2] W-4-LP
NRC Notified By: KEVIN LUESHEN
HQ OPS Officer: BILL HUFFMAN
Notification Date: 06/09/2011
Notification Time: 19:03 [ET]
Event Date: 06/09/2011
Event Time: 14:22 [CDT]
Last Update Date: 06/09/2011
Notification Time: 19:03 [ET]
Event Date: 06/09/2011
Event Time: 14:22 [CDT]
Last Update Date: 06/09/2011
Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(2)(xi) - OFFSITE NOTIFICATION
10 CFR Section:
50.72(b)(2)(xi) - OFFSITE NOTIFICATION
Person (Organization):
JULIO LARA (R3DO)
JULIO LARA (R3DO)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 1 | N | Y | 99 | Power Operation | 99 | Power Operation |
| 2 | N | Y | 99 | Power Operation | 99 | Power Operation |
INADVERTENT SIREN ACTIVATION DUE TO LIGHTNING STRIKE
"This siren affects both Dresden and Braidwood Stations. At approximately 1422 [CDT] on June 9, 2011, a Grundy County representative notified Exelon of an inadvertent siren activation. The Exelon representative contacted the siren contractor at 1423 [CDT] inquiring about siren activity in the shared Braidwood/Dresden Emergency Planning Zones. Upon review and polling of the system at 1444 [CDT], siren BD11 was identified in the area of concern with a communication failure. The siren contractor was immediately dispatched and arrived at the siren location at approximately 1520 [CDT]. Upon arrival, the siren was not sounding and significant damage was identified, which was indicative of a direct lightning strike. The siren was declared out of service and repairs will begin on June 10th."
The licensee notified the NRC Resident Inspector and Grundy County local authorities.
See Dresden Event #46943 for same event notification.
"This siren affects both Dresden and Braidwood Stations. At approximately 1422 [CDT] on June 9, 2011, a Grundy County representative notified Exelon of an inadvertent siren activation. The Exelon representative contacted the siren contractor at 1423 [CDT] inquiring about siren activity in the shared Braidwood/Dresden Emergency Planning Zones. Upon review and polling of the system at 1444 [CDT], siren BD11 was identified in the area of concern with a communication failure. The siren contractor was immediately dispatched and arrived at the siren location at approximately 1520 [CDT]. Upon arrival, the siren was not sounding and significant damage was identified, which was indicative of a direct lightning strike. The siren was declared out of service and repairs will begin on June 10th."
The licensee notified the NRC Resident Inspector and Grundy County local authorities.
See Dresden Event #46943 for same event notification.
Power Reactor
Event Number: 46943
Facility: DRESDEN
Region: 3 State: IL
Unit: [] [2] [3]
RX Type: [1] GE-1,[2] GE-3,[3] GE-3
NRC Notified By: DENNIS FRANCIS
HQ OPS Officer: DONALD NORWOOD
Region: 3 State: IL
Unit: [] [2] [3]
RX Type: [1] GE-1,[2] GE-3,[3] GE-3
NRC Notified By: DENNIS FRANCIS
HQ OPS Officer: DONALD NORWOOD
Notification Date: 06/09/2011
Notification Time: 19:11 [ET]
Event Date: 06/09/2011
Event Time: 14:22 [CDT]
Last Update Date: 06/09/2011
Notification Time: 19:11 [ET]
Event Date: 06/09/2011
Event Time: 14:22 [CDT]
Last Update Date: 06/09/2011
Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(2)(xi) - OFFSITE NOTIFICATION
10 CFR Section:
50.72(b)(2)(xi) - OFFSITE NOTIFICATION
Person (Organization):
JULIO LARA (R3DO)
JULIO LARA (R3DO)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 2 | N | Y | 100 | Power Operation | 100 | Power Operation |
| 3 | N | Y | 100 | Power Operation | 100 | Power Operation |
INADVERTENT SIREN ACTIVATION DUE TO LIGHTNING STRIKE
"This siren affects both Dresden and Braidwood Stations. This notification is for both sites.
"At approximately 1422 [CDT] on June 9, 2011, a Grundy County representative notified Exelon of an inadvertent siren activation. The Exelon representative contacted the siren contractor at 1423 [CDT] inquiring about siren activity in the shared Braidwood/Dresden Emergency Planning Zones. Upon review and polling of the system at 1444 [CDT], siren BD11 was identified in the area of concern with a communication failure. The siren contractor was immediately dispatched and arrived at the siren location at approximately 1520 [CDT]. Upon arrival, the siren was not sounding and significant damage was identified, which was indicative of a direct lightning strike. The siren was declared out of service and repairs will begin on June 10th."
"This condition is reportable under 10CFR50.72(b)(2)(xi) - News release or notification of other governmental agency."
The licensee notified the NRC Resident Inspector and Grundy County local authorities.
See Braidwood Event #46942 concerning same event.
"This siren affects both Dresden and Braidwood Stations. This notification is for both sites.
"At approximately 1422 [CDT] on June 9, 2011, a Grundy County representative notified Exelon of an inadvertent siren activation. The Exelon representative contacted the siren contractor at 1423 [CDT] inquiring about siren activity in the shared Braidwood/Dresden Emergency Planning Zones. Upon review and polling of the system at 1444 [CDT], siren BD11 was identified in the area of concern with a communication failure. The siren contractor was immediately dispatched and arrived at the siren location at approximately 1520 [CDT]. Upon arrival, the siren was not sounding and significant damage was identified, which was indicative of a direct lightning strike. The siren was declared out of service and repairs will begin on June 10th."
"This condition is reportable under 10CFR50.72(b)(2)(xi) - News release or notification of other governmental agency."
The licensee notified the NRC Resident Inspector and Grundy County local authorities.
See Braidwood Event #46942 concerning same event.