Event Notification Report for October 11, 2006
U.S. Nuclear Regulatory Commission
Operations Center
EVENT REPORTS FOR
10/10/2006 - 10/11/2006
Power Reactor
Event Number: 42897
Facility: WOLF CREEK
Region: 4 State: KS
Unit: [1] [] []
RX Type: [1] W-4-LP
NRC Notified By: DAVE DREES
HQ OPS Officer: JASON KOZAL
Region: 4 State: KS
Unit: [1] [] []
RX Type: [1] W-4-LP
NRC Notified By: DAVE DREES
HQ OPS Officer: JASON KOZAL
Notification Date: 10/11/2006
Notification Time: 15:05 [ET]
Event Date: 10/11/2006
Event Time: 12:40 [CDT]
Last Update Date: 10/11/2006
Notification Time: 15:05 [ET]
Event Date: 10/11/2006
Event Time: 12:40 [CDT]
Last Update Date: 10/11/2006
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):
JACK WHITTEN (R4)
JACK WHITTEN (R4)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 1 | N | N | 0 | Refueling | 0 | Refueling |
UNANALYZED CONDITION - INDICATIONS ON PRESSURIZER NOZZLE TO SAFE END WELDS
"The following event description is based on information currently available. If through subsequent reviews of this event, additional information is identified that is pertinent to this event or alters the information being provided at this time, a follow-up notification will be made via the ENS or under the reporting requirements of 10 CFR 50.73.
"On October 11, 2006, at approximately 12:40 Central Standard Time (CST), engineering personnel performing preplanned in-service examination of the Pressurizer nozzle to safe end welds notified the Control Room that five circumferential indications had been discovered that cannot be found acceptable under ASME Section XI.
"Since the indications cannot be found acceptable under ASME Section XI the condition is reportable in accordance with 10 CFR 50.72(b)(3)(ii)(A).
"Three indications are located on the surge line, one indication is on the safety nozzle, and one indication is on the relief nozzle. The locations are part of the Reactor Coolant System (RCS) pressure boundary. There is no evidence of RCS pressure boundary leakage.
"WCGS is currently shutdown for its 15th refueling outage and is in Mode 6. Weld overlay of the safe ends is an activity scheduled for the current outage.
"An investigation of this event will be conducted in accordance with the WCGS corrective action program."
The licensee notified the NRC Resident Inspector.
"The following event description is based on information currently available. If through subsequent reviews of this event, additional information is identified that is pertinent to this event or alters the information being provided at this time, a follow-up notification will be made via the ENS or under the reporting requirements of 10 CFR 50.73.
"On October 11, 2006, at approximately 12:40 Central Standard Time (CST), engineering personnel performing preplanned in-service examination of the Pressurizer nozzle to safe end welds notified the Control Room that five circumferential indications had been discovered that cannot be found acceptable under ASME Section XI.
"Since the indications cannot be found acceptable under ASME Section XI the condition is reportable in accordance with 10 CFR 50.72(b)(3)(ii)(A).
"Three indications are located on the surge line, one indication is on the safety nozzle, and one indication is on the relief nozzle. The locations are part of the Reactor Coolant System (RCS) pressure boundary. There is no evidence of RCS pressure boundary leakage.
"WCGS is currently shutdown for its 15th refueling outage and is in Mode 6. Weld overlay of the safe ends is an activity scheduled for the current outage.
"An investigation of this event will be conducted in accordance with the WCGS corrective action program."
The licensee notified the NRC Resident Inspector.
Power Reactor
Event Number: 42898
Facility: ARKANSAS NUCLEAR
Region: 4 State: AR
Unit: [1] [2] []
RX Type: [1] B&W-L-LP,[2] CE
NRC Notified By: DAVID THOMPSON
HQ OPS Officer: JASON KOZAL
Region: 4 State: AR
Unit: [1] [2] []
RX Type: [1] B&W-L-LP,[2] CE
NRC Notified By: DAVID THOMPSON
HQ OPS Officer: JASON KOZAL
Notification Date: 10/11/2006
Notification Time: 15:47 [ET]
Event Date: 10/11/2006
Event Time: 14:39 [CDT]
Last Update Date: 10/12/2006
Notification Time: 15:47 [ET]
Event Date: 10/11/2006
Event Time: 14:39 [CDT]
Last Update Date: 10/12/2006
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):
JACK WHITTEN (R4)
JACK WHITTEN (R4)
| 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 |
SPDS OUT OF SERVICE
"The Safety Parameter Display System [SPDS] will be removed from service for approximately 6 hours for planned maintenance."
Appropriate compensatory actions have been put in place by the licensee to ensure remote indication of SPDS parameters are available when needed.
The licensee will notify the NRC Resident Inspector.
* * * UPDATE ON 10/12/06 AT 0043 EDT BY CHUCK OLSON TO MACKINNON * * *
Safety Parameter Display System place back in service at 0043 EDT.
R4DO (J. Whitten) notified.
The NRC Resident Inspector will be notified of this update by the licensee.
"The Safety Parameter Display System [SPDS] will be removed from service for approximately 6 hours for planned maintenance."
Appropriate compensatory actions have been put in place by the licensee to ensure remote indication of SPDS parameters are available when needed.
The licensee will notify the NRC Resident Inspector.
* * * UPDATE ON 10/12/06 AT 0043 EDT BY CHUCK OLSON TO MACKINNON * * *
Safety Parameter Display System place back in service at 0043 EDT.
R4DO (J. Whitten) notified.
The NRC Resident Inspector will be notified of this update by the licensee.