Event Notification Report for November 11, 2011
U.S. Nuclear Regulatory Commission
Operations Center
EVENT REPORTS FOR
11/10/2011 - 11/11/2011
EVENT NUMBERS
47431
Power Reactor
Event Number: 47431
Facility: DUANE ARNOLD
Region: 3 State: IA
Unit: [1] [] []
RX Type: [1] GE-4
NRC Notified By: HANS OLSON
HQ OPS Officer: HOWIE CROUCH
Region: 3 State: IA
Unit: [1] [] []
RX Type: [1] GE-4
NRC Notified By: HANS OLSON
HQ OPS Officer: HOWIE CROUCH
Notification Date: 11/11/2011
Notification Time: 13:17 [ET]
Event Date: 11/11/2011
Event Time: 10:21 [CST]
Last Update Date: 11/11/2011
Notification Time: 13:17 [ET]
Event Date: 11/11/2011
Event Time: 10:21 [CST]
Last Update Date: 11/11/2011
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):
JOHN GIESSNER (R3DO)
JOHN GIESSNER (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 |
TECHNICAL SUPPORT CENTER INOPERABLE DUE TO PLANNED MAINTENANCE
"At 1021 hrs. (CST) on November 11, 2011, the Duane Arnold Energy Center (DAEC) Technical Support Center (TSC) Ventilation Fan 1VAC070 was removed from service for pre-planned maintenance. The expected duration of the maintenance is 6 hours. The backup plan is to relocate key TSC personnel to the Control Room where the Standby Filter Units protect personnel.
"This notification is being made pursuant to 10 CFR 50.72(b)(3)(xiii) due to a loss of emergency response facility."
The licensee has notified the NRC Resident Inspector.
* * * UPDATE FROM HAN OLSON TO PETE SNYDER AT 1907 EST ON 11/11/11 * * *
The TSC Ventilation Fan 1VAC070 has been returned to service and functionally tested so the TSC has been returned to service.
The licensee notified the NRC Resident Inspector.
Notified R3DO (Giessner).
"At 1021 hrs. (CST) on November 11, 2011, the Duane Arnold Energy Center (DAEC) Technical Support Center (TSC) Ventilation Fan 1VAC070 was removed from service for pre-planned maintenance. The expected duration of the maintenance is 6 hours. The backup plan is to relocate key TSC personnel to the Control Room where the Standby Filter Units protect personnel.
"This notification is being made pursuant to 10 CFR 50.72(b)(3)(xiii) due to a loss of emergency response facility."
The licensee has notified the NRC Resident Inspector.
* * * UPDATE FROM HAN OLSON TO PETE SNYDER AT 1907 EST ON 11/11/11 * * *
The TSC Ventilation Fan 1VAC070 has been returned to service and functionally tested so the TSC has been returned to service.
The licensee notified the NRC Resident Inspector.
Notified R3DO (Giessner).