Event Notification Report for July 06, 2011
U.S. Nuclear Regulatory Commission
Operations Center
EVENT REPORTS FOR
07/05/2011 - 07/06/2011
EVENT NUMBERS
47025470274703047031
Power Reactor
Event Number: 47025
Facility: COOK
Region: 3 State: MI
Unit: [1] [2] []
RX Type: [1] W-4-LP,[2] W-4-LP
NRC Notified By: DAN KURTH
HQ OPS Officer: STEVE SANDIN
Region: 3 State: MI
Unit: [1] [2] []
RX Type: [1] W-4-LP,[2] W-4-LP
NRC Notified By: DAN KURTH
HQ OPS Officer: STEVE SANDIN
Notification Date: 07/06/2011
Notification Time: 03:14 [ET]
Event Date: 07/06/2011
Event Time: 04:00 [EDT]
Last Update Date: 07/07/2011
Notification Time: 03:14 [ET]
Event Date: 07/06/2011
Event Time: 04:00 [EDT]
Last Update Date: 07/07/2011
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):
DAVID HILLS (R3DO)
DAVID HILLS (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 |
UNAVAILABILITY OF TSC VENTILATION SYSTEM DUE TO SCHEDULED MAINTENANCE
"At 0400 EDT on Wednesday, July 6, 2011, the Cook Nuclear Plant (CNP) Technical Support Center (TSC) air conditioning and charcoal filtration systems will be removed from service for scheduled maintenance.
"Under certain accident conditions the TSC may become unavailable due to the inability of the air conditioning and charcoal filtration systems to maintain a habitable atmosphere. Compensatory measures exist to relocate TSC personnel to the unaffected unit's control room if necessary.
"TSC ventilation system maintenance is scheduled to be completed by 1600 EDT on Wednesday, July 6, 2011.
"The licensee has notified the NRC Resident Inspector.
"This notification is being made in accordance with 10 CFR 50.72 (b)(3)(xiii) due to the loss of an emergency response facility."
* * * UPDATE FROM DEAN BRUCK TO PETE SNYDER ON 7/7/11 AT 1056 EDT * * *
"The TSC ventilation system maintenance was completed satisfactorily and the system restored to service at 1500 EDT on 7/6/11."
The licensee notified the NRC Resident Inspector.
"At 0400 EDT on Wednesday, July 6, 2011, the Cook Nuclear Plant (CNP) Technical Support Center (TSC) air conditioning and charcoal filtration systems will be removed from service for scheduled maintenance.
"Under certain accident conditions the TSC may become unavailable due to the inability of the air conditioning and charcoal filtration systems to maintain a habitable atmosphere. Compensatory measures exist to relocate TSC personnel to the unaffected unit's control room if necessary.
"TSC ventilation system maintenance is scheduled to be completed by 1600 EDT on Wednesday, July 6, 2011.
"The licensee has notified the NRC Resident Inspector.
"This notification is being made in accordance with 10 CFR 50.72 (b)(3)(xiii) due to the loss of an emergency response facility."
* * * UPDATE FROM DEAN BRUCK TO PETE SNYDER ON 7/7/11 AT 1056 EDT * * *
"The TSC ventilation system maintenance was completed satisfactorily and the system restored to service at 1500 EDT on 7/6/11."
The licensee notified the NRC Resident Inspector.
Power Reactor
Event Number: 47027
Facility: HATCH
Region: 2 State: GA
Unit: [1] [2] []
RX Type: [1] GE-4,[2] GE-4
NRC Notified By: STANLEY STONE
HQ OPS Officer: DONALD NORWOOD
Region: 2 State: GA
Unit: [1] [2] []
RX Type: [1] GE-4,[2] GE-4
NRC Notified By: STANLEY STONE
HQ OPS Officer: DONALD NORWOOD
Notification Date: 07/06/2011
Notification Time: 09:42 [ET]
Event Date: 07/06/2011
Event Time: 09:03 [EDT]
Last Update Date: 07/06/2011
Notification Time: 09:42 [ET]
Event Date: 07/06/2011
Event Time: 09:03 [EDT]
Last Update Date: 07/06/2011
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):
BRIAN BONSER (R2DO)
BRIAN BONSER (R2DO)
| 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 |
OPERATIONS SUPPORT CENTER OUT OF SERVICE DUE TO HVAC MAINTENANCE
"Planned preventive maintenance activities are being performed today (July 6, 2011) on the Hatch Nuclear Plant's HP [Health Physics] / Chemistry area emergency air handling unit. The HP / Chemistry area emergency HVAC is required for functionality of the Operations Support Center (OSC), as this area may be utilized during declared emergencies. These planned work activities are to be completed today within (6) hours. During the time these activities are being performed, the HP office emergency HVAC will not be available for operation and will be rendered non-functional during the performance of the work activities.
"If an emergency condition requiring activation of the OSC occurs during the time these work activities are being performed, then contingency plans call for continued utilization of the HP / Chemistry areas as long as radiological conditions allow. Habitability surveys will be performed more frequently in the areas while they are being utilized. If required, respiratory protection equipment will be utilized, as appropriate, for emergency responders utilizing this area until such time as the HP / Chemistry emergency HVAC to be returned to service.
"This event is reportable per 10CFR50.72(b)(3)(xiii) as described in NUREG-1022, Rev. 2, since this work activity affects an emergency response facility for the duration of the evolutions."
The licensee notified the NRC Resident Inspector.
"Planned preventive maintenance activities are being performed today (July 6, 2011) on the Hatch Nuclear Plant's HP [Health Physics] / Chemistry area emergency air handling unit. The HP / Chemistry area emergency HVAC is required for functionality of the Operations Support Center (OSC), as this area may be utilized during declared emergencies. These planned work activities are to be completed today within (6) hours. During the time these activities are being performed, the HP office emergency HVAC will not be available for operation and will be rendered non-functional during the performance of the work activities.
"If an emergency condition requiring activation of the OSC occurs during the time these work activities are being performed, then contingency plans call for continued utilization of the HP / Chemistry areas as long as radiological conditions allow. Habitability surveys will be performed more frequently in the areas while they are being utilized. If required, respiratory protection equipment will be utilized, as appropriate, for emergency responders utilizing this area until such time as the HP / Chemistry emergency HVAC to be returned to service.
"This event is reportable per 10CFR50.72(b)(3)(xiii) as described in NUREG-1022, Rev. 2, since this work activity affects an emergency response facility for the duration of the evolutions."
The licensee notified the NRC Resident Inspector.
Power Reactor
Event Number: 47030
Facility: QUAD CITIES
Region: 3 State: IL
Unit: [1] [2] []
RX Type: [1] GE-3,[2] GE-3
NRC Notified By: TERRY GALLENTINE
HQ OPS Officer: CHARLES TEAL
Region: 3 State: IL
Unit: [1] [2] []
RX Type: [1] GE-3,[2] GE-3
NRC Notified By: TERRY GALLENTINE
HQ OPS Officer: CHARLES TEAL
Notification Date: 07/06/2011
Notification Time: 19:23 [ET]
Event Date: 07/06/2011
Event Time: 14:10 [CDT]
Last Update Date: 07/06/2011
Notification Time: 19:23 [ET]
Event Date: 07/06/2011
Event Time: 14:10 [CDT]
Last Update Date: 07/06/2011
Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(3)(v)(D) - ACCIDENT MITIGATION
10 CFR Section:
50.72(b)(3)(v)(D) - ACCIDENT MITIGATION
Person (Organization):
DAVID HILLS (R3DO)
DAVID HILLS (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 |
CONTROL ROOM EMERGENCY VENTILATION AC SYSTEM INOPERABLE
"On July 6, 2011 at 1410, the Control Room Emergency Ventilation Air Conditioning (CREV AC) system was declared inoperable due to unsatisfactory performance, high vibration condition of the air conditioning compressor. As a result, Technical Specification 3.7.5 condition A was entered.
"The CREV AC system maintains a habitable control room environment and ensures the operability of components in the control room emergency zone during accident conditions.
"This notification is being made in accordance with 10 CFR 50.72(b)(3)(v)(D) because the CREV system is a single train system, and loss of the CREV AC could impact the plant's ability to mitigate the consequences of an accident."
The licensee has notified the NRC Resident Inspector.
"On July 6, 2011 at 1410, the Control Room Emergency Ventilation Air Conditioning (CREV AC) system was declared inoperable due to unsatisfactory performance, high vibration condition of the air conditioning compressor. As a result, Technical Specification 3.7.5 condition A was entered.
"The CREV AC system maintains a habitable control room environment and ensures the operability of components in the control room emergency zone during accident conditions.
"This notification is being made in accordance with 10 CFR 50.72(b)(3)(v)(D) because the CREV system is a single train system, and loss of the CREV AC could impact the plant's ability to mitigate the consequences of an accident."
The licensee has notified the NRC Resident Inspector.
Power Reactor
Event Number: 47031
Facility: THREE MILE ISLAND
Region: 1 State: PA
Unit: [1] [] []
RX Type: [1] B&W-L-LP,[2] B&W-L-LP
NRC Notified By: JOE SHOFFNER
HQ OPS Officer: CHARLES TEAL
Region: 1 State: PA
Unit: [1] [] []
RX Type: [1] B&W-L-LP,[2] B&W-L-LP
NRC Notified By: JOE SHOFFNER
HQ OPS Officer: CHARLES TEAL
Notification Date: 07/06/2011
Notification Time: 21:47 [ET]
Event Date: 07/06/2011
Event Time: 14:40 [EDT]
Last Update Date: 07/06/2011
Notification Time: 21:47 [ET]
Event Date: 07/06/2011
Event Time: 14:40 [EDT]
Last Update Date: 07/06/2011
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):
DANIEL HOLODY (R1DO)
DANIEL HOLODY (R1DO)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 1 | N | Y | 100 | Power Operation | 100 | Power Operation |
TECHNICAL SUPPORT CENTER (TSC) HVAC OUT OF SERVICE DUE TO LOSS OF POWER
"At about 1440 EDT on July 6, 2011, the Technical Support Center (TSC) HVAC lost power during motor control switch testing. The transfer switch did not fully engage resulting in loss of power to the TSC HVAC fan motor. Troubleshooting was performed and power was restored to the TSC HVAC system at approximately 1625 EDT.
"This involved an emergent loss of the TSC capability that could not be readily remediated in less than the TSC staffing time of one hour.
"Unrelated to the first event, 13.2 KV power to the TMI station office buildings was lost at approximately 1740 EDT on July 6, 2011 due to a broken electric service pole. This resulted in another loss of the TSC HVAC that could not be readily remediated. At 2115 EDT power was restored and the ventilation was started. This event resulted in another reportable condition.
"These events affected the ability of the TSC ventilation to maintain adequate radiological habitability in the event of an emergency with an airborne radiological release. All other capabilities were unaffected by this emergent condition. Existing procedures provide direction to relocate TSC personnel in the event of a TSC habitability concern, however the backup facility does not have standby electrical power or a filtered ventilation system."
The licensee has informed the NRC Resident Inspector.
"At about 1440 EDT on July 6, 2011, the Technical Support Center (TSC) HVAC lost power during motor control switch testing. The transfer switch did not fully engage resulting in loss of power to the TSC HVAC fan motor. Troubleshooting was performed and power was restored to the TSC HVAC system at approximately 1625 EDT.
"This involved an emergent loss of the TSC capability that could not be readily remediated in less than the TSC staffing time of one hour.
"Unrelated to the first event, 13.2 KV power to the TMI station office buildings was lost at approximately 1740 EDT on July 6, 2011 due to a broken electric service pole. This resulted in another loss of the TSC HVAC that could not be readily remediated. At 2115 EDT power was restored and the ventilation was started. This event resulted in another reportable condition.
"These events affected the ability of the TSC ventilation to maintain adequate radiological habitability in the event of an emergency with an airborne radiological release. All other capabilities were unaffected by this emergent condition. Existing procedures provide direction to relocate TSC personnel in the event of a TSC habitability concern, however the backup facility does not have standby electrical power or a filtered ventilation system."
The licensee has informed the NRC Resident Inspector.