Event Notification Report for September 21, 2002
U.S. Nuclear Regulatory Commission
Operations Center
EVENT REPORTS FOR
09/20/2002 - 09/21/2002
General Information or Other
Event Number: 39210
Rep Org: OK DEQ RAD MANAGEMENT
Licensee: APAC
Region: 4
City: OKLAHOMA CITY State: OK
County:
License #: OK26937-01
Agreement: Y
Docket:
NRC Notified By: MIKE BRODERICK
HQ OPS Officer: FANGIE JONES
Licensee: APAC
Region: 4
City: OKLAHOMA CITY State: OK
County:
License #: OK26937-01
Agreement: Y
Docket:
NRC Notified By: MIKE BRODERICK
HQ OPS Officer: FANGIE JONES
Notification Date: 09/23/2002
Notification Time: 10:47 [ET]
Event Date: 09/21/2002
Event Time: 02:30 [CDT]
Last Update Date: 09/24/2002
Notification Time: 10:47 [ET]
Event Date: 09/21/2002
Event Time: 02:30 [CDT]
Last Update Date: 09/24/2002
Emergency Class: NON EMERGENCY
10 CFR Section:
10 CFR Section:
Person (Organization):
JOHN PELLET (R4)
DOUG BROADDUS (NMSS)
JOHN PELLET (R4)
DOUG BROADDUS (NMSS)
AGREEMENT STATE REPORT - DAMAGED TROXLER GAUGE
The licensee reported to the State of Oklahoma that on Friday night that one of their trucks was proceeding south on I-35 near 4th St. in Moore, OK when a Troxler gauge was bounced out of the bed of the truck. The gauge was struck by another vehicle and damaged severely. The gauge was recovered and taken to the shop where a survey indicated 8 millirem around the outside of the case. A leak test is being conducted, results are not yet available. The company has contacted Troxler concerning the gauge. More information will be available later.
* * * UPDATE AT 1316 EDT ON 9/24/02 FROM PAM BISHOP TO GERRY WAIG * * *
The Oklahoma Dept. of Environmental Quality called to report that the damaged Troxler gauge, model #4640, serial #750143, is licensed to APAC Oklahoma Inc, P. O. Box 580670, 3605 North 129th East Ave, Tulsa, OK 74158-0670. The source is a Cs-137, 7.1 millicurie source. The gauge has been disassembled and no external contamination was detected. Wipes and pictures of the damaged gauge have been sent to Troxler for evaluation. The damaged gauge is being held by the licensee in it's Shawnee, OK office. The APAC Radiation Safety Officer is Mr. John Ringwald (918) 438-2020.
Notified R4DO (John Pellet) and NMSS (Doug Broaddus)
The licensee reported to the State of Oklahoma that on Friday night that one of their trucks was proceeding south on I-35 near 4th St. in Moore, OK when a Troxler gauge was bounced out of the bed of the truck. The gauge was struck by another vehicle and damaged severely. The gauge was recovered and taken to the shop where a survey indicated 8 millirem around the outside of the case. A leak test is being conducted, results are not yet available. The company has contacted Troxler concerning the gauge. More information will be available later.
* * * UPDATE AT 1316 EDT ON 9/24/02 FROM PAM BISHOP TO GERRY WAIG * * *
The Oklahoma Dept. of Environmental Quality called to report that the damaged Troxler gauge, model #4640, serial #750143, is licensed to APAC Oklahoma Inc, P. O. Box 580670, 3605 North 129th East Ave, Tulsa, OK 74158-0670. The source is a Cs-137, 7.1 millicurie source. The gauge has been disassembled and no external contamination was detected. Wipes and pictures of the damaged gauge have been sent to Troxler for evaluation. The damaged gauge is being held by the licensee in it's Shawnee, OK office. The APAC Radiation Safety Officer is Mr. John Ringwald (918) 438-2020.
Notified R4DO (John Pellet) and NMSS (Doug Broaddus)
Power Reactor
Event Number: 39206
Facility: WATTS BAR
Region: 2 State: TN
Unit: [1] [] []
RX Type: [1] W-4-LP,[2] W-4-LP
NRC Notified By: JOHN RODEN
HQ OPS Officer: RICH LAURA
Region: 2 State: TN
Unit: [1] [] []
RX Type: [1] W-4-LP,[2] W-4-LP
NRC Notified By: JOHN RODEN
HQ OPS Officer: RICH LAURA
Notification Date: 09/21/2002
Notification Time: 15:40 [ET]
Event Date: 09/21/2002
Event Time: 11:00 [EDT]
Last Update Date: 09/21/2002
Notification Time: 15:40 [ET]
Event Date: 09/21/2002
Event Time: 11:00 [EDT]
Last Update Date: 09/21/2002
Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(3)(iv)(A) - VALID SPECIF SYS ACTUATION
10 CFR Section:
50.72(b)(3)(iv)(A) - VALID SPECIF SYS ACTUATION
Person (Organization):
PAUL FREDRICKSON (R2)
PAUL FREDRICKSON (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 |
PARTIAL LOSS OF OFFSITE POWER CAUSED EDG START AND AFW PUMP START
"While operating at 100% power on September 21, 2002, Watts Bar Unit 1 experienced a momentary loss of the 161kV offsite power feed to Common Station Service Transformer (CSST) D. WBN's two offsite power supplies are fed from a remote switchyard located at the Watts Bar hydro electric plant. The one affected offsite power source and the CSST D are the primary power sources for 6900V Shutdown Boards 1B-B and 2B-B, The partial loss of offsite power was caused by the inadvertent manual operation of a breaker at the hydro electric plant switchyard. The opening of the breaker occurred at 11:00:20 (EDT) and the breaker was reset to provide offsite power at 11:00:34 (EDT). Due to this event, and the loss of the primary feed to the shutdown boards, a valid engineered safety function (ESF) actuation occurred which started all four of the standby diesel generators (DGs), along with, as designed, the 1B-B Motor Driven Auxiliary Feedwater (AFW) Pump and the Turbine Driven AFW Pump. The DGs provided power to the affected Shutdown Boards and other required blackout loads during the event. All components at the hydro plant were restored to their normal configuration at 11:44 (EDT). Affected Plant components are currently being restored to normal configurations."
The NRC Resident Inspector was notified.
"While operating at 100% power on September 21, 2002, Watts Bar Unit 1 experienced a momentary loss of the 161kV offsite power feed to Common Station Service Transformer (CSST) D. WBN's two offsite power supplies are fed from a remote switchyard located at the Watts Bar hydro electric plant. The one affected offsite power source and the CSST D are the primary power sources for 6900V Shutdown Boards 1B-B and 2B-B, The partial loss of offsite power was caused by the inadvertent manual operation of a breaker at the hydro electric plant switchyard. The opening of the breaker occurred at 11:00:20 (EDT) and the breaker was reset to provide offsite power at 11:00:34 (EDT). Due to this event, and the loss of the primary feed to the shutdown boards, a valid engineered safety function (ESF) actuation occurred which started all four of the standby diesel generators (DGs), along with, as designed, the 1B-B Motor Driven Auxiliary Feedwater (AFW) Pump and the Turbine Driven AFW Pump. The DGs provided power to the affected Shutdown Boards and other required blackout loads during the event. All components at the hydro plant were restored to their normal configuration at 11:44 (EDT). Affected Plant components are currently being restored to normal configurations."
The NRC Resident Inspector was notified.