Event Notification Report for July 24, 2011
U.S. Nuclear Regulatory Commission
Operations Center
EVENT REPORTS FOR
07/23/2011 - 07/24/2011
EVENT NUMBERS
47092
Power Reactor
Event Number: 47092
Facility: DRESDEN
Region: 3 State: IL
Unit: [] [2] [3]
RX Type: [1] GE-1,[2] GE-3,[3] GE-3
NRC Notified By: PHILLIP PRATER
HQ OPS Officer: STEVE SANDIN
Region: 3 State: IL
Unit: [] [2] [3]
RX Type: [1] GE-1,[2] GE-3,[3] GE-3
NRC Notified By: PHILLIP PRATER
HQ OPS Officer: STEVE SANDIN
Notification Date: 07/24/2011
Notification Time: 16:38 [ET]
Event Date: 07/24/2011
Event Time: 13:05 [CDT]
Last Update Date: 07/24/2011
Notification Time: 16:38 [ET]
Event Date: 07/24/2011
Event Time: 13:05 [CDT]
Last Update Date: 07/24/2011
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):
ERIC DUNCAN (R3DO)
ERIC DUNCAN (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 |
EXTENDED EMERGENCY SIREN ACTIVATION DURING TESTING
"At approximately 1305 Central Time, a Grundy County Illinois representative notified Exelon of an extended Emergency Preparedness Zone (EPZ) siren activation. EPZ siren DR-13 was tested as part of normal routines this date at 1200 Central Time. During the test the siren lost AC power which shifted the power supply to the back up battery. The alarm continued to sound following the test until the back up battery depleted.
"The siren is declared inoperable. The siren contractor (Fulton Technologies, Inc) is in route for troubleshooting and repairs. 45 of 46 sirens remain operable for the Dresden Emergency Preparedness Zone.
"This condition is reportable under 10 CFR 50.72(b)(2)(xi). News release or notification of other governmental agency."
The licensee informed the NRC Resident Inspector.
"At approximately 1305 Central Time, a Grundy County Illinois representative notified Exelon of an extended Emergency Preparedness Zone (EPZ) siren activation. EPZ siren DR-13 was tested as part of normal routines this date at 1200 Central Time. During the test the siren lost AC power which shifted the power supply to the back up battery. The alarm continued to sound following the test until the back up battery depleted.
"The siren is declared inoperable. The siren contractor (Fulton Technologies, Inc) is in route for troubleshooting and repairs. 45 of 46 sirens remain operable for the Dresden Emergency Preparedness Zone.
"This condition is reportable under 10 CFR 50.72(b)(2)(xi). News release or notification of other governmental agency."
The licensee informed the NRC Resident Inspector.