Event Notification Report for October 05, 2002
U.S. Nuclear Regulatory Commission
Operations Center
EVENT REPORTS FOR
10/04/2002 - 10/05/2002
Power Reactor
Event Number: 39258
Facility: ARKANSAS NUCLEAR
Region: 4 State: AR
Unit: [1] [] []
RX Type: [1] B&W-L-LP,[2] CE
NRC Notified By: Chris Garbe
HQ OPS Officer: MIKE RIPLEY
Region: 4 State: AR
Unit: [1] [] []
RX Type: [1] B&W-L-LP,[2] CE
NRC Notified By: Chris Garbe
HQ OPS Officer: MIKE RIPLEY
Notification Date: 10/08/2002
Notification Time: 15:20 [ET]
Event Date: 10/05/2002
Event Time: 00:00 [CDT]
Last Update Date:
Notification Time: 15:20 [ET]
Event Date: 10/05/2002
Event Time: 00:00 [CDT]
Last Update Date:
Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(3)(ii)(A) - DEGRADED CONDITION
10 CFR Section:
50.72(b)(3)(ii)(A) - DEGRADED CONDITION
Person (Organization):
WILLIAM JONES (R4)
CHRIS GRIMES (NRR)
WILLIAM JONES (R4)
CHRIS GRIMES (NRR)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 1 | N | N | 0 | Hot Standby | 0 | Hot Standby |
DEGRADATION OF RCS PRESSURE BOUNDARY AT ARKANSAS NUCLEAR ONE UNIT 1
"With the Reactor Coolant System (RCS) In Mode 3 (Hot Standby) conditions at the start of a scheduled refueling outage on October 5, 2002, a leaking weld was discovered at the connection of a drain line to a High Pressure Injection (HPI) line inside the Reactor Building. The leak rate was approximately 0.2 gpm. The immediate evaluation concluded that this leak did not result in the HPI System being inoperable. Subsequent evaluation of the condition on October 8, 2002. determined that the leak was from the RCS pressure boundary. Between the RCS and leak location are a normally open manual isolation valve and a check valve. Weld repair is complete. This condition is being reported as a serious degradation of a principal safety barrier in accordance with 10CFR50.72(b)(3)(ii)(A)."
The licensee notified the NRC Resident Inspector.
"With the Reactor Coolant System (RCS) In Mode 3 (Hot Standby) conditions at the start of a scheduled refueling outage on October 5, 2002, a leaking weld was discovered at the connection of a drain line to a High Pressure Injection (HPI) line inside the Reactor Building. The leak rate was approximately 0.2 gpm. The immediate evaluation concluded that this leak did not result in the HPI System being inoperable. Subsequent evaluation of the condition on October 8, 2002. determined that the leak was from the RCS pressure boundary. Between the RCS and leak location are a normally open manual isolation valve and a check valve. Weld repair is complete. This condition is being reported as a serious degradation of a principal safety barrier in accordance with 10CFR50.72(b)(3)(ii)(A)."
The licensee notified the NRC Resident Inspector.
Power Reactor
Event Number: 39249
Facility: NORTH ANNA
Region: 2 State: VA
Unit: [1] [2] []
RX Type: [1] W-3-LP,[2] W-3-LP
NRC Notified By: BRAD BROWN
HQ OPS Officer: STEVE SANDIN
Region: 2 State: VA
Unit: [1] [2] []
RX Type: [1] W-3-LP,[2] W-3-LP
NRC Notified By: BRAD BROWN
HQ OPS Officer: STEVE SANDIN
Notification Date: 10/05/2002
Notification Time: 14:16 [ET]
Event Date: 10/05/2002
Event Time: 11:25 [EDT]
Last Update Date: 10/05/2002
Notification Time: 14:16 [ET]
Event Date: 10/05/2002
Event Time: 11:25 [EDT]
Last Update Date: 10/05/2002
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):
JAY HENSON (R2)
JAY HENSON (R2)
| 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 | N | 0 | Refueling | 0 | Refueling |
OFFSITE NOTIFICATION DUE TO A FREON RELEASE IN THE TURBINE BUILDING
"At 0210 today, 10/5/02, we had a failure of a seal on our mechanical refrigeration unit. This resulted in 5,250 lbs of freon, R-12, being released to the environment. This required reporting to Federal, State and Local agencies that a release of greater than 5,000 lbs had occurred in less than 24 hours. The release ended at 0454 today due to the contents had completely blown down.
- The National Response Center was notified at 1125 today
- The Virginia Emergency Services Operations Center was notified at 1130 today
- The Virginia State Dept. of Environmental Quality and the Local Emergency Planning Coordinator will be notified by the Virginia Emergency Services Operations Center.
"Due to these offsite notifications we are making this 4 hour report."
The licensee informed the NRC resident inspector.
"At 0210 today, 10/5/02, we had a failure of a seal on our mechanical refrigeration unit. This resulted in 5,250 lbs of freon, R-12, being released to the environment. This required reporting to Federal, State and Local agencies that a release of greater than 5,000 lbs had occurred in less than 24 hours. The release ended at 0454 today due to the contents had completely blown down.
- The National Response Center was notified at 1125 today
- The Virginia Emergency Services Operations Center was notified at 1130 today
- The Virginia State Dept. of Environmental Quality and the Local Emergency Planning Coordinator will be notified by the Virginia Emergency Services Operations Center.
"Due to these offsite notifications we are making this 4 hour report."
The licensee informed the NRC resident inspector.