Event Notification Report for June 01, 2010
U.S. Nuclear Regulatory Commission
Operations Center
EVENT REPORTS FOR
05/31/2010 - 06/01/2010
EVENT NUMBERS
45968459694597145965
Power Reactor
Event Number: 45968
Facility: PALO VERDE
Region: 4 State: AZ
Unit: [1] [2] [3]
RX Type: [1] CE,[2] CE,[3] CE
NRC Notified By: DELBERT ELKINTON
HQ OPS Officer: HOWIE CROUCH
Region: 4 State: AZ
Unit: [1] [2] [3]
RX Type: [1] CE,[2] CE,[3] CE
NRC Notified By: DELBERT ELKINTON
HQ OPS Officer: HOWIE CROUCH
Notification Date: 06/01/2010
Notification Time: 15:36 [ET]
Event Date: 06/01/2010
Event Time: 07:15 [MST]
Last Update Date: 06/01/2010
Notification Time: 15:36 [ET]
Event Date: 06/01/2010
Event Time: 07:15 [MST]
Last Update Date: 06/01/2010
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):
GREG WERNER (R4DO)
GREG WERNER (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 |
| 2 | N | Y | 100 | Power Operation | 100 | Power Operation |
| 3 | N | Y | 100 | Power Operation | 100 | Power Operation |
PUBLIC WARNING SYSTEM SIREN OUT OF SERVICE
"The following event description is based on information currently available. If through subsequent reviews of this event, additional information is identified that is pertinent to this event or alters the information being provided at this time, a follow-up notification will be made via the ENS or under the reporting requirements of 10CFR50.73.
"On June 01, 2010, at approximately 0715 Mountain Standard Time (MST), the Palo Verde Emergency Planning Department discovered that public warning system siren No. 17 was not responding, and therefore, is out of service. The loss of siren No. 17 could potentially impact a population of approximately 1196 people in the 5-mile Emergency Planning Zone (EPZ).
"Since the loss of siren No. 17 could impair Arizona Public Service Company's ability to inform greater than 5% of the population within the EPZ, this notification is being made in accordance with 10 CFR 10.72(b)(3)(xiii). If an event occurs while siren No. 17 is out of service, the Palo Verde Emergency Plan has a contingency for dispatching Maricopa County Sheriff's Office (MCSO) vehicles with loud speakers to alert persons within the affected area. The MCSO is prepared to implement this contingency should it become necessary.
"The NRC Resident Inspector has been notified of siren No. 17 being out of service and this ENS call."
* * * UPDATE FROM DAVE OAKES TO HOWIE CROUCH @ 1818 EDT ON 6/01/10 * * *
"Siren number 17 was returned to service at 1435 MST. The NRC Senior Resident Inspector has been notified."
The remote radio was replaced and all post-maintenance testing was completed.
Notified R4DO (Werner).
"The following event description is based on information currently available. If through subsequent reviews of this event, additional information is identified that is pertinent to this event or alters the information being provided at this time, a follow-up notification will be made via the ENS or under the reporting requirements of 10CFR50.73.
"On June 01, 2010, at approximately 0715 Mountain Standard Time (MST), the Palo Verde Emergency Planning Department discovered that public warning system siren No. 17 was not responding, and therefore, is out of service. The loss of siren No. 17 could potentially impact a population of approximately 1196 people in the 5-mile Emergency Planning Zone (EPZ).
"Since the loss of siren No. 17 could impair Arizona Public Service Company's ability to inform greater than 5% of the population within the EPZ, this notification is being made in accordance with 10 CFR 10.72(b)(3)(xiii). If an event occurs while siren No. 17 is out of service, the Palo Verde Emergency Plan has a contingency for dispatching Maricopa County Sheriff's Office (MCSO) vehicles with loud speakers to alert persons within the affected area. The MCSO is prepared to implement this contingency should it become necessary.
"The NRC Resident Inspector has been notified of siren No. 17 being out of service and this ENS call."
* * * UPDATE FROM DAVE OAKES TO HOWIE CROUCH @ 1818 EDT ON 6/01/10 * * *
"Siren number 17 was returned to service at 1435 MST. The NRC Senior Resident Inspector has been notified."
The remote radio was replaced and all post-maintenance testing was completed.
Notified R4DO (Werner).
Power Reactor
Event Number: 45969
Facility: MILLSTONE
Region: 1 State: CT
Unit: [] [] [3]
RX Type: [1] GE-3,[2] CE,[3] W-4-LP
NRC Notified By: NORMAN KUZEL
HQ OPS Officer: VINCE KLCO
Region: 1 State: CT
Unit: [] [] [3]
RX Type: [1] GE-3,[2] CE,[3] W-4-LP
NRC Notified By: NORMAN KUZEL
HQ OPS Officer: VINCE KLCO
Notification Date: 06/01/2010
Notification Time: 16:57 [ET]
Event Date: 06/01/2010
Event Time: 15:50 [EDT]
Last Update Date: 06/02/2010
Notification Time: 16:57 [ET]
Event Date: 06/01/2010
Event Time: 15:50 [EDT]
Last Update Date: 06/02/2010
Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(3)(v)(C) - POT UNCNTRL RAD REL
10 CFR Section:
50.72(b)(3)(v)(C) - POT UNCNTRL RAD REL
Person (Organization):
GLENN DENTEL (R1DO)
GLENN DENTEL (R1DO)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 3 | N | Y | 100 | Power Operation | 100 | Power Operation |
POTENTIAL LOSS OF RADIATION RELEASE CONTROLS
"On May 27, 2010, during a control board walkdown, it was discovered that two sets of auxiliary building tunnel exhaust dampers were open at the same time. This configuration created a pathway from the secondary containment to the outside. The condition was immediately corrected. Additional investigation determined that this condition existed since May 11, 2010, when Millstone 3 was in Mode 5.
"Technical Specification 3.6.6.2 'Secondary Containment' is applicable in Modes 1, 2, 3, and 4. The condition discovered on May 27, 2010, rendered Secondary Containment inoperable. Further evaluation since the discovery date concludes that the secondary containment structure was in a condition which could prevent the fulfillment of the safety function for controlling the release of radioactive material. [On June 1, at 1550 EDT the licensee determined that the event was potentially reportable].
"An investigation is on-going.
"This condition is being reported pursuant to 10 CFR 50.72(b)(3)(v)(c).
"The NRC Senior Resident Inspector has been notified [by the licensee]."
The State of Connecticut and the Town of Waterford were notified. A press release will be issued.
* * * UPDATE FROM FRED PERKINS TO HOWIE CROUCH @ 1304 EDT ON 6/2/10 * * *
The licensee reported that no press release will be issued for this event. They will be notifying the NRC Resident Inspector.
Notified R1DO (Dentel)
"On May 27, 2010, during a control board walkdown, it was discovered that two sets of auxiliary building tunnel exhaust dampers were open at the same time. This configuration created a pathway from the secondary containment to the outside. The condition was immediately corrected. Additional investigation determined that this condition existed since May 11, 2010, when Millstone 3 was in Mode 5.
"Technical Specification 3.6.6.2 'Secondary Containment' is applicable in Modes 1, 2, 3, and 4. The condition discovered on May 27, 2010, rendered Secondary Containment inoperable. Further evaluation since the discovery date concludes that the secondary containment structure was in a condition which could prevent the fulfillment of the safety function for controlling the release of radioactive material. [On June 1, at 1550 EDT the licensee determined that the event was potentially reportable].
"An investigation is on-going.
"This condition is being reported pursuant to 10 CFR 50.72(b)(3)(v)(c).
"The NRC Senior Resident Inspector has been notified [by the licensee]."
The State of Connecticut and the Town of Waterford were notified. A press release will be issued.
* * * UPDATE FROM FRED PERKINS TO HOWIE CROUCH @ 1304 EDT ON 6/2/10 * * *
The licensee reported that no press release will be issued for this event. They will be notifying the NRC Resident Inspector.
Notified R1DO (Dentel)
Power Reactor
Event Number: 45971
Facility: BYRON
Region: 3 State: IL
Unit: [1] [2] []
RX Type: [1] W-4-LP,[2] W-4-LP
NRC Notified By: BRYAN CURRIER
HQ OPS Officer: HOWIE CROUCH
Region: 3 State: IL
Unit: [1] [2] []
RX Type: [1] W-4-LP,[2] W-4-LP
NRC Notified By: BRYAN CURRIER
HQ OPS Officer: HOWIE CROUCH
Notification Date: 06/01/2010
Notification Time: 18:03 [ET]
Event Date: 06/01/2010
Event Time: 12:39 [CDT]
Last Update Date: 06/01/2010
Notification Time: 18:03 [ET]
Event Date: 06/01/2010
Event Time: 12:39 [CDT]
Last Update Date: 06/01/2010
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):
PATTY PELKE (R3DO)
PATTY PELKE (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 |
TECHNICAL SUPPORT CENTER VENTILATION SYSTEM DISCOVERED TO BE NON-FUNCTIONAL
"At 1239 CDT on June 1, 2010, Byron Station Technical Support Center (TSC) ventilation (OW25C), filtration system was identified as nonfunctional. This failure affects 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 of the TSC are unaffected by this emergent condition. Currently, troubleshooting/investigation is being performed. This condition is considered a major loss of emergency assessment capability and is reportable under 10CFR50.72(b)(3)(xiii).
"The NRC Resident Inspector has been notified."
"At 1239 CDT on June 1, 2010, Byron Station Technical Support Center (TSC) ventilation (OW25C), filtration system was identified as nonfunctional. This failure affects 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 of the TSC are unaffected by this emergent condition. Currently, troubleshooting/investigation is being performed. This condition is considered a major loss of emergency assessment capability and is reportable under 10CFR50.72(b)(3)(xiii).
"The NRC Resident Inspector has been notified."
Power Reactor
Event Number: 45965
Facility: CLINTON
Region: 3 State: IL
Unit: [1] [] []
RX Type: [1] GE-6
NRC Notified By: ED TIEDEMANN
HQ OPS Officer: JOHN KNOKE
Region: 3 State: IL
Unit: [1] [] []
RX Type: [1] GE-6
NRC Notified By: ED TIEDEMANN
HQ OPS Officer: JOHN KNOKE
Notification Date: 06/01/2010
Notification Time: 11:45 [ET]
Event Date: 06/01/2010
Event Time: 09:00 [CDT]
Last Update Date: 06/01/2010
Notification Time: 11:45 [ET]
Event Date: 06/01/2010
Event Time: 09:00 [CDT]
Last Update Date: 06/01/2010
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):
PATTY PELKE (R3DO)
PATTY PELKE (R3DO)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 1 | N | Y | 97 | Power Operation | 97 | Power Operation |
TECHNICAL SUPPORT CENTER UNAVAILABLE DUE TO PREVENTIVE MAINTENANCE
"On June 1, 2010, at 0900 hours CDT, Clinton Power Station removed the Technical Support Center (TSC) ventilation system from operation to facilitate preventive maintenance to replace charcoal media in the ventilation system filter assembly.
"This work is expected to last approximately 3 days, during which the TSC ventilation system will be unavailable. If an emergency is declared requiring TSC activation during this period, the TSC will be staffed and activated using existing emergency planning procedures unless the TSC becomes uninhabitable due to ambient temperature, radiological, or other conditions. If relocation of the TSC becomes necessary, the Station Emergency Director will relocate the TSC staff to an alternate TSC location in accordance with applicable site procedures giving first consideration to the Control Room. TSC facility leads have been made aware of this contingency.
"This notification is being made in accordance with 10CFR50.72 (b) (3) (xiii) due to the potential loss of an emergency response facility (ERF) because of the unavailability of the emergency filtration mode of the ventilation system. An update will be provided once the TSC ventilation has been restored to normal operation. The NRC Resident Inspector has been notified."
* * * UPDATE FROM ED TIEDEMANN TO HOWIE CROUCH @ 1716 EDT ON 6/1/10 * * *
"At 1300 hours CDT, the charcoal media in the ventilation system filter assembly has been replaced and post maintenance testing completed satisfactorily. The TSC ventilation system is now available."
The licensee has notified the NRC Resident Inspector. Notified R1DO (Pelke).
"On June 1, 2010, at 0900 hours CDT, Clinton Power Station removed the Technical Support Center (TSC) ventilation system from operation to facilitate preventive maintenance to replace charcoal media in the ventilation system filter assembly.
"This work is expected to last approximately 3 days, during which the TSC ventilation system will be unavailable. If an emergency is declared requiring TSC activation during this period, the TSC will be staffed and activated using existing emergency planning procedures unless the TSC becomes uninhabitable due to ambient temperature, radiological, or other conditions. If relocation of the TSC becomes necessary, the Station Emergency Director will relocate the TSC staff to an alternate TSC location in accordance with applicable site procedures giving first consideration to the Control Room. TSC facility leads have been made aware of this contingency.
"This notification is being made in accordance with 10CFR50.72 (b) (3) (xiii) due to the potential loss of an emergency response facility (ERF) because of the unavailability of the emergency filtration mode of the ventilation system. An update will be provided once the TSC ventilation has been restored to normal operation. The NRC Resident Inspector has been notified."
* * * UPDATE FROM ED TIEDEMANN TO HOWIE CROUCH @ 1716 EDT ON 6/1/10 * * *
"At 1300 hours CDT, the charcoal media in the ventilation system filter assembly has been replaced and post maintenance testing completed satisfactorily. The TSC ventilation system is now available."
The licensee has notified the NRC Resident Inspector. Notified R1DO (Pelke).