Event Notification Report for February 28, 2005
U.S. Nuclear Regulatory Commission
Operations Center
EVENT REPORTS FOR
02/27/2005 - 02/28/2005
Power Reactor
Event Number: 41450
Facility: BYRON
Region: 3 State: IL
Unit: [1] [] []
RX Type: [1] W-4-LP,[2] W-4-LP
NRC Notified By: SCOTT FRUIN
HQ OPS Officer: JEFF ROTTON
Region: 3 State: IL
Unit: [1] [] []
RX Type: [1] W-4-LP,[2] W-4-LP
NRC Notified By: SCOTT FRUIN
HQ OPS Officer: JEFF ROTTON
Notification Date: 02/28/2005
Notification Time: 17:27 [ET]
Event Date: 02/28/2005
Event Time: 02:06 [CST]
Last Update Date: 02/28/2005
Notification Time: 17:27 [ET]
Event Date: 02/28/2005
Event Time: 02:06 [CST]
Last Update Date: 02/28/2005
Emergency Class: NON EMERGENCY
10 CFR Section:
10 CFR Section:
Person (Organization):
ANNE MARIE STONE (R3)
CYNTHIA CARPENTER (NRR)
KRISS KENNEDY (IRD)
ANNE MARIE STONE (R3)
CYNTHIA CARPENTER (NRR)
KRISS KENNEDY (IRD)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 1 | N | N | 0 | Hot Standby | 0 | Hot Standby |
DISCOVERY OF AFTER-THE-FACT EMERGENCY CONDITION - UNUSUAL EVENT
The following information was provided by the licensee via fax (licensee text in quotes):
"At 1535 [CST] hours on 2/28/05, Byron Station determined that an emergency classification for an Unusual Event was not declared previously at 0206 [CST] on 2/28/05. The missed Unusual Event classification was due to a RCS dose equivalent I-131 value for Byron Unit 1 exceeding the EAL threshold value of >1.0 microCuries/gm [Iodine] for EAL MU7. An RCS iodine sample was taken at 0106 hours on 2/28/05 during shutdown activities for the B1R13 refueling outage. The sample was analyzed and reported back to the Operations shift at 0206 hours with a value of 1.07 microCuries/gm[Iodine]. This sample has been reconfirmed. At 0206 on 2/28/05, Byron Unit 1 was not in the mode of applicability for the RCS coolant activity Technical Specification 3.4.16. It was not recognized at that time that the EAL threshold value was exceeded until 1535 hours on 2/28/05. Note that a subsequent RCS sample taken at 0930 on 2/28/05 determined that the EAL threshold value is no longer exceeded and the current value remains less than the threshold. Byron Unit 1 has been operating the current cycle with an estimated 1-3 leaking fuel rods and special limitations were implemented by the site during shutdown.
"This notification is being made in accordance with the requirements of 10 CFR 50.72(a) for a missed declaration of an Unusual Event for RCS dose EQ I-131 exceeding the EAL threshold value of 1.0 microCuries/gm[Iodine] during shutdown activities for the Byron Unit 1 refueling outage. This issue has been placed in the Byron Corrective Action Program."
The licensee will notify the NRC Resident Inspector, State and Local agencies.
The following information was provided by the licensee via fax (licensee text in quotes):
"At 1535 [CST] hours on 2/28/05, Byron Station determined that an emergency classification for an Unusual Event was not declared previously at 0206 [CST] on 2/28/05. The missed Unusual Event classification was due to a RCS dose equivalent I-131 value for Byron Unit 1 exceeding the EAL threshold value of >1.0 microCuries/gm [Iodine] for EAL MU7. An RCS iodine sample was taken at 0106 hours on 2/28/05 during shutdown activities for the B1R13 refueling outage. The sample was analyzed and reported back to the Operations shift at 0206 hours with a value of 1.07 microCuries/gm[Iodine]. This sample has been reconfirmed. At 0206 on 2/28/05, Byron Unit 1 was not in the mode of applicability for the RCS coolant activity Technical Specification 3.4.16. It was not recognized at that time that the EAL threshold value was exceeded until 1535 hours on 2/28/05. Note that a subsequent RCS sample taken at 0930 on 2/28/05 determined that the EAL threshold value is no longer exceeded and the current value remains less than the threshold. Byron Unit 1 has been operating the current cycle with an estimated 1-3 leaking fuel rods and special limitations were implemented by the site during shutdown.
"This notification is being made in accordance with the requirements of 10 CFR 50.72(a) for a missed declaration of an Unusual Event for RCS dose EQ I-131 exceeding the EAL threshold value of 1.0 microCuries/gm[Iodine] during shutdown activities for the Byron Unit 1 refueling outage. This issue has been placed in the Byron Corrective Action Program."
The licensee will notify the NRC Resident Inspector, State and Local agencies.
Power Reactor
Event Number: 41451
Facility: PALO VERDE
Region: 4 State: AZ
Unit: [1] [2] [3]
RX Type: [1] CE,[2] CE,[3] CE
NRC Notified By: STEVE SMITH
HQ OPS Officer: JEFF ROTTON
Region: 4 State: AZ
Unit: [1] [2] [3]
RX Type: [1] CE,[2] CE,[3] CE
NRC Notified By: STEVE SMITH
HQ OPS Officer: JEFF ROTTON
Notification Date: 02/28/2005
Notification Time: 19:52 [ET]
Event Date: 02/28/2005
Event Time: 14:57 [MST]
Last Update Date: 02/28/2005
Notification Time: 19:52 [ET]
Event Date: 02/28/2005
Event Time: 14:57 [MST]
Last Update Date: 02/28/2005
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):
CHUCK CAIN (R4)
CHUCK CAIN (R4)
| 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 |
MAJOR LOSS OF SIREN COVERAGE WITHIN THE EMERGENCY PLANNING ZONE
The following information was provided by the licensee via facsimile (licensee text in quotes):
"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 February 28, 2005 at approximately 14:57 Mountain Standard Time, the Palo Verde Emergency Preparedness Program Manager was notified of vandalism to a single siren (#42) that resulted in the siren being inoperable. Based on evidence from previous testing, the vandalism has been established to have occurred sometime between 15:00, Friday, 02/25/2005 and 03:00, Saturday, 02/26/2005. The affected siren is estimated to impact approximately 116 members of the population (7.3%) in the emergency planning zone (EPZ) within 5 miles. Palo Verde's reporting criterion is a loss of capability to inform greater than 5% of the population within 5 miles (or 10% within 5 to 10 miles) for greater than 1 hour. This call is being placed due to the relatively large segment of the population affected, and the uncertainty of the length of time that will be needed to restore the siren to operable condition. The Palo Verde Emergency Plan (section 6.6.2.1) has a contingency for dispatching Maricopa County Sheriff's Office (MCSO) vehicles with loud speakers to alert persons within the affected area(s) when sirens are inoperable.
"There are no events in progress that require siren operation.
"The NRC Resident Inspector has been notified of the siren failure and this ENS call."
The following information was provided by the licensee via facsimile (licensee text in quotes):
"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 February 28, 2005 at approximately 14:57 Mountain Standard Time, the Palo Verde Emergency Preparedness Program Manager was notified of vandalism to a single siren (#42) that resulted in the siren being inoperable. Based on evidence from previous testing, the vandalism has been established to have occurred sometime between 15:00, Friday, 02/25/2005 and 03:00, Saturday, 02/26/2005. The affected siren is estimated to impact approximately 116 members of the population (7.3%) in the emergency planning zone (EPZ) within 5 miles. Palo Verde's reporting criterion is a loss of capability to inform greater than 5% of the population within 5 miles (or 10% within 5 to 10 miles) for greater than 1 hour. This call is being placed due to the relatively large segment of the population affected, and the uncertainty of the length of time that will be needed to restore the siren to operable condition. The Palo Verde Emergency Plan (section 6.6.2.1) has a contingency for dispatching Maricopa County Sheriff's Office (MCSO) vehicles with loud speakers to alert persons within the affected area(s) when sirens are inoperable.
"There are no events in progress that require siren operation.
"The NRC Resident Inspector has been notified of the siren failure and this ENS call."