| U.S. Nuclear Regulatory Commission
Operations Center Event Reports For
06/04/2013 - 06/05/2013 ** EVENT NUMBERS ** |
 | !!!!! THIS EVENT HAS BEEN RETRACTED. THIS EVENT HAS BEEN RETRACTED !!!!! | | Power Reactor | Event Number: 48932 | Facility: HARRIS
Region: 2 State: NC
Unit: [1] [ ] [ ]
RX Type: [1] W-3-LP
NRC Notified By: MARK LEE
HQ OPS Officer: CHARLES TEAL | Notification Date: 04/16/2013
Notification Time: 17:15 [ET]
Event Date: 04/16/2013
Event Time: 16:25 [EDT]
Last Update Date: 06/04/2013 | Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(3)(ii)(B) - UNANALYZED CONDITION
| Person (Organization):
STEVEN VIAS (R2DO)
|
| Unit | SCRAM Code | RX CRIT | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode | | 1 | N | Y | 100 | Power Operation | 100 | Power Operation | Event Text POTENTIAL CABLE SIZE AND BREAKER MISMATCH
"During investigation of a documentation discrepancy, a potential cable size and breaker mismatch was identified to exist in a non-safety related DC panel. Initial evaluation has shown that the cable may heat and be potentially damaged if exposed to a 'smart' high impedance fault for an extended period. This discovered condition has not been previously analyzed for NFPA [National Fire Protection Association] 805 common enclosure circuit coordination.
"Fire watches were established as a compensatory measure immediately following identification of the issue on April 8, 2013. An initial review of fire protection analysis was completed on April 16, 2013. Fire watches remain in place until a modification which will restore coordination is complete.
"The licensee notified the NRC Resident Inspector."
* * * RETRACTION FROM JOHN CAVES TO CHARLES TEAL AT 1400 EDT ON 6/4/13 * * *
"An analysis demonstrated that adjacent cables in the common enclosure would not be damaged, therefore, the condition does not significantly degrade plant safety."
The licensee has notified the NRC Resident Inspector. Notified R2DO (McCoy). |
| Power Reactor | Event Number: 49052 | Facility: COLUMBIA GENERATING STATION
Region: 4 State: WA
Unit: [2] [ ] [ ]
RX Type: [2] GE-5
NRC Notified By: TONY PACE
HQ OPS Officer: BILL HUFFMAN | Notification Date: 05/19/2013
Notification Time: 18:51 [ET]
Event Date: 05/19/2013
Event Time: 14:21 [PDT]
Last Update Date: 06/04/2013 | Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(3)(xiii) - LOSS COMM/ASMT/RESPONSE
| Person (Organization):
WAYNE WALKER (R4DO)
|
| Unit | SCRAM Code | RX CRIT | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode | | 2 | N | N | 0 | Refueling | 0 | Refueling | Event Text PLANNED OUTAGE OF RADIOLOGICAL AND SEISMIC MONITORING CAPABILITY
"During Refueling Outage 21, at approximately 0700 PDT on May 20, 2013 the following plant's gaseous effluent radiation monitoring systems and seismic monitoring systems will be removed from service due to a planned power outage:
" - Reactor Building Stack Radiation Monitor: Low Range; Intermediate Range; and High Range Detectors. [NOTE: The Reactor Building Stack Radiation Monitors were removed from service as of 1421 PDT on 19 May 2013 (24 hours before the power outage) to allow for a gradual warming up of the sensors]
" - Rad Waste Building Vent Exhaust Low Range Radiation [Rate Meter] and Exhaust Air Monitor Radiation Indicating Switch
" - Turbine Building Radiation Indicating Switch and Exhaust Air Radiation Indicating Switch
" - Seismic Instrument Accelerometers
" - Seismic Instrument Accelerographs
"The listed equipment is expected to be re-energized at approximately 1400 PDT on May 22, 2013. The Reactor Building Stack Radiation Monitors is expected be operational approximately 48 hours after they are re-energized to allow for sensor cooling requirements to be established.
"To compensate for the loss of the radiation monitoring equipment, an additional Health Physics (HP) Technician trained to acquire offsite dose assessment information on offsite releases will be on shift. The additional personnel will be pre-staged in support of the radiation monitoring system outage and will be deployed in accordance with guidance in site procedures and the compensatory measure instructions.
"To compensate for the loss of the seismic monitoring capability, an entry into the abnormal operating procedure 'EARTHQUAKE' will be made when an earthquake is felt in the control room or when information is received from plant personnel that an earthquake has been felt. Earthquake severity will be estimated in accordance with abnormal operating procedure 'EARTHQUAKE' in lieu of instrumentation being available. Information from the US Geological Survey (USGS), if available, will supplement the estimation of earthquake severity.
"This event is being reported as a loss of emergency assessment capability in accordance with 10 CFR 50.72(b)(3)(xiii). A follow up notification will be made when the equipment has been returned to service.
"The licensee has notified the NRC Resident Inspector."
* * * UPDATE FROM DIEGO SUAREZ TO CHARLES TEAL AT 1932 EDT ON 6/4/13 * * *
"The Columbia Seismic Instruments (Accelerometers and Accelerographs) were returned to service on May 30, 2013, at 0440 PDT.
"The Columbia radiation monitoring instruments listed below were returned to service on June 2, 2013, at 1814 PDT:
- Reactor Building Stack Radiation Monitor: Low Range; Intermediate Range; and High Range Detectors
- Rad Waste Building Vent Exhaust Low Range Radiation [Rate Meter] and Exhaust Air Monitor Radiation Indicating Switch
- Turbine Building Radiation Indicating Switch and Exhaust Air Radiation Indicating Switch"
The licensee will notify the NRC Resident Inspector.
Notified R4DO (Spitzberg). |
| Power Reactor | Event Number: 49088 | Facility: KEWAUNEE
Region: 3 State: WI
Unit: [1] [ ] [ ]
RX Type: [1] W-2-LP
NRC Notified By: KARL KIUPELIS
HQ OPS Officer: DONG HWA PARK | Notification Date: 06/04/2013
Notification Time: 09:49 [ET]
Event Date: 06/04/2013
Event Time: 08:30 [CDT]
Last Update Date: 06/04/2013 | Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(3)(xiii) - LOSS COMM/ASMT/RESPONSE
| Person (Organization):
CHRISTINE LIPA (R3DO)
|
| Unit | SCRAM Code | RX CRIT | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode | | 1 | N | N | 0 | Defueled | 0 | Defueled | Event Text LOSS OF ASSESSMENT CAPABILITY DUE TO PLANNED MAINTENANCE
"On June 4, 2013, at 0830 CDT, the Kewaunee Power Station rendered the Auxiliary Building Special Particulate Iodine Noble Gas 'SPING' (Mid and Hi Range) and the Reactor Building 'SPING' (Mid and Hi Range) non-functional for planned maintenance. The Emergency Response Organization (ERO) team has been notified of the Auxiliary Building SPING and Reactor Building Vent SPING non-functionality due to planned maintenance.
"The SPINGs are expected to be out of service for approximately 7 hours.
"This condition is being reported in accordance with 10CFR50.72(b)(3)(xiii) as an event that results in a major loss of emergency assessment capability (unable to sufficiently identify the upper two emergency action levels for offsite radiation conditions).
"The NRC Resident Inspector has been notified." | |