Event Notification Report for November 06, 2005
U.S. Nuclear Regulatory Commission
Operations Center
EVENT REPORTS FOR
11/05/2005 - 11/06/2005
Power Reactor
Event Number: 42122
Facility: CRYSTAL RIVER
Region: 2 State: FL
Unit: [3] [] []
RX Type: [3] B&W-L-LP
NRC Notified By: LARRY MOFFATT
HQ OPS Officer: MARK ABRAMOVITZ
Region: 2 State: FL
Unit: [3] [] []
RX Type: [3] B&W-L-LP
NRC Notified By: LARRY MOFFATT
HQ OPS Officer: MARK ABRAMOVITZ
Notification Date: 11/06/2005
Notification Time: 12:45 [ET]
Event Date: 11/06/2005
Event Time: 09:35 [EST]
Last Update Date: 11/06/2005
Notification Time: 12:45 [ET]
Event Date: 11/06/2005
Event Time: 09:35 [EST]
Last Update Date: 11/06/2005
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):
DAVID AYRES (R2)
DAVID AYRES (R2)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 3 | N | N | 0 | Refueling | 0 | Refueling |
TEMPORARY LOSS OF OFFSITE NOTIFICATION SIRENS
"At 0935 on November 6, 2005, all offsite notification sirens for Crystal River Unit 3 were lost. One siren failed and sent a feedback signal which in turn disabled all remaining sirens. The failed siren was bypassed at 1124, thereby restoring the remaining 39 sirens to service. The failed siren will be repaired promptly. During the loss of siren function, backup means of notifying the public were available, including route alerting using local law enforcement and use of the Code Red autodialing system. This is reportable as an immediate notification (eight-hour report) in accordance with 10CFR50.72(b)(3)(xiii)."
The siren system is maintained by the county. Compensatory measures for the remaining area is either: dispatching a police car, or fire truck, or using the Code Red autodialing system for the affected area.
The licensee notified the NRC Resident Inspector.
"At 0935 on November 6, 2005, all offsite notification sirens for Crystal River Unit 3 were lost. One siren failed and sent a feedback signal which in turn disabled all remaining sirens. The failed siren was bypassed at 1124, thereby restoring the remaining 39 sirens to service. The failed siren will be repaired promptly. During the loss of siren function, backup means of notifying the public were available, including route alerting using local law enforcement and use of the Code Red autodialing system. This is reportable as an immediate notification (eight-hour report) in accordance with 10CFR50.72(b)(3)(xiii)."
The siren system is maintained by the county. Compensatory measures for the remaining area is either: dispatching a police car, or fire truck, or using the Code Red autodialing system for the affected area.
The licensee notified the NRC Resident Inspector.
Power Reactor
Event Number: 42201
Facility: DRESDEN
Region: 3 State: IL
Unit: [] [2] []
RX Type: [1] GE-1,[2] GE-3,[3] GE-3
NRC Notified By: PAUL SALGADO
HQ OPS Officer: JOHN KNOKE
Region: 3 State: IL
Unit: [] [2] []
RX Type: [1] GE-1,[2] GE-3,[3] GE-3
NRC Notified By: PAUL SALGADO
HQ OPS Officer: JOHN KNOKE
Notification Date: 12/13/2005
Notification Time: 15:42 [ET]
Event Date: 11/06/2005
Event Time: 01:19 [CST]
Last Update Date: 12/13/2005
Notification Time: 15:42 [ET]
Event Date: 11/06/2005
Event Time: 01:19 [CST]
Last Update Date: 12/13/2005
Emergency Class: NON EMERGENCY
10 CFR Section:
50.73(a)(1) - INVALID SPECIF SYSTEM ACTUATION
10 CFR Section:
50.73(a)(1) - INVALID SPECIF SYSTEM ACTUATION
Person (Organization):
SONIA BURGESS (R3)
SONIA BURGESS (R3)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 2 | N | N | 0 | Refueling | 0 | Refueling |
INVALID CONTAINMENT ISOLATION SIGNAL GENERATED
"This telephone notification is provided in accordance with 10 CFR 50.73(a)(1), to report an invalid actuation reportable under 10 CFR 50.73(a)(2)(iv)(A), 'Any event or condition that resulted in manual or automatic actuation of any system listed in paragraph (a)(2)(iv)(B).' General containment isolation signals affecting containment isolation valves in more than one system is identified in paragraph (a)(2)(iv)(B).
"On November 6, 2005, at 0119 hours, with Unit 2 in Mode 5 'Refueling,' an invalid containment isolation signal was generated when maintenance personnel disconnected an electrical lead. The event occurred due to an error in a work package and resulted in the initiation of Group 2 and 3 isolation signals. The containment isolation signals affected containment isolation valves in more than one system. All affected containment isolation valves operated as designed."
The licensee notified the NRC Resident Inspector.
"This telephone notification is provided in accordance with 10 CFR 50.73(a)(1), to report an invalid actuation reportable under 10 CFR 50.73(a)(2)(iv)(A), 'Any event or condition that resulted in manual or automatic actuation of any system listed in paragraph (a)(2)(iv)(B).' General containment isolation signals affecting containment isolation valves in more than one system is identified in paragraph (a)(2)(iv)(B).
"On November 6, 2005, at 0119 hours, with Unit 2 in Mode 5 'Refueling,' an invalid containment isolation signal was generated when maintenance personnel disconnected an electrical lead. The event occurred due to an error in a work package and resulted in the initiation of Group 2 and 3 isolation signals. The containment isolation signals affected containment isolation valves in more than one system. All affected containment isolation valves operated as designed."
The licensee notified the NRC Resident Inspector.