Event Notification Report for May 19, 2013
U.S. Nuclear Regulatory Commission
Operations Center
EVENT REPORTS FOR
05/18/2013 - 05/19/2013
EVENT NUMBERS
49052
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
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
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
10 CFR Section:
50.72(b)(3)(xiii) - LOSS COMM/ASMT/RESPONSE
Person (Organization):
WAYNE WALKER (R4DO)
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 |
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).
"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).