ENS 56374
ENS Event | |
---|---|
21:18 Feb 20, 2023 | |
Title | Offsite Notification to State Agency |
Event Description | The following information was provided by the licensee via fax:
At 1618 EST on February 20, 2023, North Anna Power Station notified the Virginia Department of Environmental Quality (DEQ) that water discharged into Lake Anna following hydrostatic testing of tanks associated with a new on-site sewage treatment plant had exceeded the project's general permit (VAG83) pH value. Hydrostatic test water discharge activities to Lake Anna began on February 20, 2023 at 0900 EST. A pH sample was collected at 0955 EST on February 20, 2023 and determined to have a pH of 9.1 which exceeded the maximum permit pH of 9.0. Discharge ceased after the reading was collected. Approximately 354 gallons were discharged to Lake Anna. A follow-up ambient pH sample result of 7.8 was collected on February 20, 2023 at 1401 EST from Lake Anna in the vicinity of the discharge pipe. No evidence of dead fish, foam, or other negative environmental impacts were observed. This event is reportable in accordance with 10 CFR 50.72(b)(2)(xi) for 'Any event or situation, related to the health and safety of the public or on-site personnel, or protection of the environment, for which a news release is planned or notification to other government agencies has been or will be made. Such an event may include an on-site fatality or inadvertent release of radioactively contaminated materials.'
The following is a summary of information provided by the licensee via telephone: The licensee called to correct the pH sample results from a pH of 9.1 to a pH of 9.93. Notified R2DO (Miller) via phone |
Where | |
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North Anna Virginia (NRC Region 2) | |
Reporting | |
10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release | |
Time - Person (Reporting Time:+-4.18 h-0.174 days <br />-0.0249 weeks <br />-0.00573 months <br />) | |
Opened: | Ken Anderson 17:07 Feb 20, 2023 |
NRC Officer: | Adam Koziol |
Last Updated: | Feb 23, 2023 |
56374 - NRC Website
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Unit 1 | |
---|---|
Reactor critical | Critical |
Scram | No |
Before | Power Operation (100 %) |
After | Power Operation (100 %) |
Unit 2 | |
---|---|
Reactor critical | Critical |
Scram | No |
Before | Power Operation (100 %) |
After | Power Operation (100 %) |
WEEKMONTHYEARENS 567432023-09-18T18:20:00018 September 2023 18:20:00
[Table view]10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification ENS 566182023-07-11T19:30:00011 July 2023 19:30:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification ENS 563742023-02-20T21:18:00020 February 2023 21:18:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification to State Agency ENS 560732022-08-27T14:15:00027 August 2022 14:15:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Turbine Trip Due to Main Transformer Fire ENS 555702021-11-10T20:15:00010 November 2021 20:15:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification Due to Pcb Oil Spill ENS 524382016-12-15T16:30:00015 December 2016 16:30:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification Made for Potential Fuel Oil Leakage ENS 508842015-03-13T13:28:00013 March 2015 13:28:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification to Osha Due to Onsite Plant Employee Passing Away ENS 490722013-05-27T19:45:00027 May 2013 19:45:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification Due to Drowning at Lake Anna ENS 476822012-02-21T18:45:00021 February 2012 18:45:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Tritium Identified Onsite Above the Voluntary Reporting Threshold ENS 476652012-02-15T17:44:00015 February 2012 17:44:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification of Sewage System Release ENS 473452011-10-14T18:40:00014 October 2011 18:40:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Bearing Cooling Water Discharge Into Lake ENS 471982011-08-25T20:10:00025 August 2011 20:10:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Notification to Offsite Agency Regarding an Onsite Oil Spill ENS 463772010-10-29T18:00:00029 October 2010 18:00:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification Due to Increase in Tritium Levels in a Ground Water Sample ENS 456232010-01-11T20:10:00011 January 2010 20:10:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification Due to Water Seepage on an Onsite Structure ENS 455582009-12-10T15:35:00010 December 2009 15:35:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Bearing Cooling Water Discharged Into Lake ENS 449722009-04-06T16:30:0006 April 2009 16:30:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Truck Engine Fire with Contaminated Material in Trailer ENS 413222005-01-10T18:45:00010 January 2005 18:45:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification to Federal Energy Regulatory Commission ENS 406372004-04-03T18:14:0003 April 2004 18:14:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Notification to Virginia Deq Concerning a Chemical Spill 2023-09-18T18:20:00 | |