Event Notification Report for April 11, 2002
U.S. Nuclear Regulatory Commission
Operations Center
EVENT REPORTS FOR
04/10/2002 - 04/11/2002
EVENT NUMBERS
38847
Power Reactor
Event Number: 38847
Facility: DRESDEN
Region: 3 State: IL
Unit: [] [2] [3]
RX Type: [1] GE-1,[2] GE-3,[3] GE-3
NRC Notified By: BILL HIGGINS
HQ OPS Officer: MIKE NORRIS
Region: 3 State: IL
Unit: [] [2] [3]
RX Type: [1] GE-1,[2] GE-3,[3] GE-3
NRC Notified By: BILL HIGGINS
HQ OPS Officer: MIKE NORRIS
Notification Date: 04/11/2002
Notification Time: 13:42 [ET]
Event Date: 04/11/2002
Event Time: 09:30 [CDT]
Last Update Date: 04/11/2002
Notification Time: 13:42 [ET]
Event Date: 04/11/2002
Event Time: 09:30 [CDT]
Last Update Date: 04/11/2002
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):
KENNETH RIEMER (R3)
KENNETH RIEMER (R3)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 2 | N | Y | 95 | Power Operation | 95 | Power Operation |
| 3 | N | Y | 100 | Power Operation | 100 | Power Operation |
CONTROL ROOM VENTILATION SYSTEM INOPERABLE
"At 1835 on 4/10/02, the Control Room Emergency Ventilation system automatically repositioned to the 'purge' mode due to an apparent faulty smoke detection circuit. It has been subsequently determined that while in the 'purge' mode, the system is incapable of performing it's required safety function. The Control Room Emergency Ventilation system is a single train system utilized to mitigate the consequences of an accident and this event is reportable under 10 CFR 50.72 (b) (3) (v) (D)."
The NRC Resident Inspector has been notified.
"At 1835 on 4/10/02, the Control Room Emergency Ventilation system automatically repositioned to the 'purge' mode due to an apparent faulty smoke detection circuit. It has been subsequently determined that while in the 'purge' mode, the system is incapable of performing it's required safety function. The Control Room Emergency Ventilation system is a single train system utilized to mitigate the consequences of an accident and this event is reportable under 10 CFR 50.72 (b) (3) (v) (D)."
The NRC Resident Inspector has been notified.