ENS 43720
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ENS Event | |
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21:04 Oct 12, 2007 | |
Title | Offsite Notification Made Due to Elevated Levels of Tritium |
Event Description | This notification is being made pursuant to 10 CFR 50.72(b)(2)(xi) due to the fact that Exelon Nuclear has informed the Illinois Emergency Management Agency and Illinois Environmental Protection Agency of recent groundwater monitoring results at Quad Cities Station. This notification was made at 16:04 hours CDST on October 12, 2007.
As part of the Station's continuing environmental monitoring and sampling program, new wells were recently installed on Station property to better characterize the known, on-site tritium plume previously identified during Exelon's fleetwide tritium study conducted in 2006. Samples from some of the new wells have indicated elevated levels of tritium requiring notification of the State of Illinois. Based on well data to date, the tritium in the groundwater is confined to Exelon property and poses no threat to public health or safety. The Station continues to track this issue by monitoring the existing wells, installing new wells for further assessment, and pursuing underground pipe integrity testing. The NRC Resident Inspector was notified of this event by the licensee. |
Where | |
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Quad Cities Illinois (NRC Region 3) | |
Reporting | |
10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release | |
Time - Person (Reporting Time:+-3.03 h-0.126 days <br />-0.018 weeks <br />-0.00415 months <br />) | |
Opened: | Daryl Clark 18:02 Oct 12, 2007 |
NRC Officer: | John Mackinnon |
Last Updated: | Oct 12, 2007 |
43720 - NRC Website
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Unit 1 | |
---|---|
Reactor critical | Critical |
Scram | No |
Before | Power Operation (97 %) |
After | Power Operation (97 %) |
Unit 2 | |
---|---|
Reactor critical | Critical |
Scram | No |
Before | Power Operation (96 %) |
After | Power Operation (96 %) |
WEEKMONTHYEARENS 566062023-07-03T20:30:0003 July 2023 20:30:00
[Table view]10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification ENS 559222022-06-01T15:43:0001 June 2022 15:43:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Inadvertent Siren Activation ENS 551322021-03-10T22:23:00010 March 2021 22:23:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Notification of Environmental Report to Another Government Agency ENS 532992018-03-29T20:00:00029 March 2018 20:00:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Unpermitted Tritium Release within the Site Boundary ENS 523682016-11-16T16:10:00016 November 2016 16:10:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Inadvertent Activation of Emergency Sirens and News Release During Emergency Planning Exercise ENS 495892013-11-27T20:46:00027 November 2013 20:46:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Non-Occupational Death On-Site ENS 444412008-08-27T14:50:00027 August 2008 14:50:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification and Press Release Due to Inadvertent Airing of a Emergency Broadcast Message ENS 437202007-10-12T21:04:00012 October 2007 21:04:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification Made Due to Elevated Levels of Tritium 2023-07-03T20:30:00 | |
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