ENS 55425
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ENS Event | |
|---|---|
15:30 Aug 22, 2021 | |
| Title | Offsite Notification of Potential Oil Discharge |
| Event Description | On August 22, 2021, Columbia Generating Station determined that no more than approximately eight (8) gallons of silicone oil was inadvertently released into a plant service water system due to a failed heat exchanger on a plant installed air compressor. The plant service water system returns water to a water basin that contains at a minimum 300,000 gallons of water. The water basin is connected to the Columbia River via a blowdown line. Although not confirmed, it is suspected that an unknown quantity of silicone oil may have been released to the Columbia River. A visual inspection of the basin did not identify any oil sheen or film, and there are no additional actions needed to mitigate this issue. It does not appear the oil release poses a threat to human health or the environment, however because there could have been a discharge of an unknown quantity of silicone oil into the Columbia River this matter is immediately reportable under RCW 90.56.280 to the US Coast Guard National Response Center and Washington State Department of Ecology.
This condition is being reported pursuant to 10 CFR 50.72(b)(2)(xi) for news release or notification of other government agencies concerning an event related to the health and safety of the public or protection of the environment. Notifications to off-site agencies were performed at 1825 PDT on 8/23/2021. The NRC resident has been informed. |
| Where | |
|---|---|
Columbia Generating Station  Washington (NRC Region 4) | |
| Reporting | |
| 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release | |
| Time - Person (Reporting Time:+31.83 h1.326 days <br />0.189 weeks <br />0.0436 months <br />) | |
| Opened: | Dan Sharpe 23:20 Aug 23, 2021 |
| NRC Officer: | Thomas Kendzia |
| Last Updated: | Aug 23, 2021 |
| 55425 - NRC Website | |
Unit 2 | |
|---|---|
| Reactor critical | Critical |
| Scram | No |
| Before | Power Operation (100 %) |
| After | Power Operation (100 %) |
WEEKMONTHYEARENS 570132024-03-07T00:35:0007 March 2024 00:35:00
[Table view]10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification ENS 565722023-06-14T01:42:00014 June 2023 01:42:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification - Oil Release ENS 554252021-08-22T15:30:00022 August 2021 15:30:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification of Potential Oil Discharge ENS 515622015-11-24T21:30:00024 November 2015 21:30:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification of Fuel Defects ENS 490192013-05-10T01:00:00010 May 2013 01:00:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Inlet/Outlet Turbidity Flocculator Not Recording Data ENS 470022011-06-30T21:25:00030 June 2011 21:25:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification Due to Inadvertent Siren Actuation ENS 459032010-05-05T22:10:0005 May 2010 22:10:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Injured Individual Hospitalized ENS 437712007-11-05T07:00:0005 November 2007 07:00:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Transportation of Radioactive Material Without Proper Labeling ENS 435742007-08-17T15:00:00017 August 2007 15:00:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification to the United States Department of Transportation ENS 417392005-06-01T15:08:0001 June 2005 15:08:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release, 10 CFR 50.72(b)(3)(xii), Transport of a Contaminated Person Offsite Contaminated Injured Person Taken to Offsite Hospital ENS 406612004-04-09T19:30:0009 April 2004 19:30:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification of Chemical Spill ENS 405802004-03-10T16:35:00010 March 2004 16:35:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification Due to a Fatality Onsite 2024-03-07T00:35:00 | |
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