Event Notification Report for August 15, 2025
U.S. Nuclear Regulatory Commission
Operations Center
EVENT REPORTS FOR
08/14/2025 - 08/15/2025
EVENT NUMBERS
57871
57871
Power Reactor
Event Number: 57871
Facility: Columbia Generating Station
Region: 4 State: WA
Unit: [2] [] []
RX Type: [2] GE-5
NRC Notified By: William Richards
HQ OPS Officer: Tenisha Meadows
Region: 4 State: WA
Unit: [2] [] []
RX Type: [2] GE-5
NRC Notified By: William Richards
HQ OPS Officer: Tenisha Meadows
Notification Date: 08/15/2025
Notification Time: 20:34 [ET]
Event Date: 08/15/2025
Event Time: 16:26 [PDT]
Last Update Date: 08/15/2025
Notification Time: 20:34 [ET]
Event Date: 08/15/2025
Event Time: 16:26 [PDT]
Last Update Date: 08/15/2025
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):
Agrawal, Ami (R4DO)
Agrawal, Ami (R4DO)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 2 | N | Y | 100 | Power Operation | 100 | Power Operation |
OFFSITE NOTIFICATION
The following information was provided by the licensee via phone and email:
"On August 15, 2025, Columbia Generating Station received a report of a sheen of oil in the circulating water basin. This basin is connected to the Columbia River via a blowdown line. This blowdown line was secured at 1423 PDT on August 15, 2025. A visual inspection of the Columbia River did not identify any oily sheen or film. It did not appear that the oil posed a threat to human health or the environment, however, because there could have been a discharge of an unknown quantity of oil into the Columbia River, the event became immediately reportable under 40 CFR 302.6a to the National Response Center, Benton County, Washington State Department of Emergency Management (under Revised Code of Washington 90.56.280), Washington Department of Ecology, as well as the Coast Guard National Response Center.
"This is being reported pursuant to 10 CFR 50. 72(b)(2)(xi) for notification of other government agencies concerning an event related to the health and safety of the public or protection of the environment. Notifications to offsite agencies was performed at 1626 on August 15, 2025. The NRC Resident Inspector has been notified."
The following information was provided by the licensee via phone and email:
"On August 15, 2025, Columbia Generating Station received a report of a sheen of oil in the circulating water basin. This basin is connected to the Columbia River via a blowdown line. This blowdown line was secured at 1423 PDT on August 15, 2025. A visual inspection of the Columbia River did not identify any oily sheen or film. It did not appear that the oil posed a threat to human health or the environment, however, because there could have been a discharge of an unknown quantity of oil into the Columbia River, the event became immediately reportable under 40 CFR 302.6a to the National Response Center, Benton County, Washington State Department of Emergency Management (under Revised Code of Washington 90.56.280), Washington Department of Ecology, as well as the Coast Guard National Response Center.
"This is being reported pursuant to 10 CFR 50. 72(b)(2)(xi) for notification of other government agencies concerning an event related to the health and safety of the public or protection of the environment. Notifications to offsite agencies was performed at 1626 on August 15, 2025. The NRC Resident Inspector has been notified."