ENS 43740
ENS Event | |
|---|---|
18:00 Oct 22, 1976 | |
| Title | Offsite Notification Due to a Small Leak - Tritium |
| Event Description | On October 20, 2007, Surry Power Station workers detected a minor water leak from an underground concrete storm drain pipe inside the station's protected area. This storm drain line flows into the station discharge canal and is monitored by station personnel. Workers had excavated this pipe to conduct inspection activities when they noticed water leaking at a rate of 1 to 2 drips per minute from a pipe joint. The leak rate was estimated at one-half a gallon per day.
A sample of the leaking water was evaluated for tritium as part of an industry ground water protection initiative and determined to have a concentration of 31,900 picoCuries per liter. This tritium leak poses no threat to employees or the public. There is no indication that tritium has migrated off the Surry site undetected. Monitoring wells on the perimeter of the Surry site and on-site drinking water well samples have not shown any indication of tritium. Leakage from this section in the storm drain line is ultimately recaptured by the building foundation dewatering system surrounding adjacent site structures and returned to the storm drain line. This leak has been contained and maintenance activities are under way to repair the storm drain line. This notification is being transmitted due to Notification of Other Government Agencies under 10CFR50 72(b)(2)(xi) The Surry County Administrator was notified. The Senior NRC Resident, Virginia Department of Health, Virginia Department of Emergency Management and Virginia Department of Environmental Quality will be notified. |
| Where | |
|---|---|
| Surry Virginia (NRC Region 2) | |
| Reporting | |
| 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release | |
| Time - Person (Reporting Time:+271726.32 h11,321.93 days <br />1,617.419 weeks <br />372.211 months <br />) | |
| Opened: | Jason L. Sweatman 16:19 Oct 22, 2007 |
| NRC Officer: | John Mackinnon |
| Last Updated: | Oct 22, 2007 |
| 43740 - NRC Website
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Unit 1 | |
|---|---|
| Reactor critical | Not Critical |
| Scram | No |
| Before | Cold Shutdown (0 %) |
| After | Cold Shutdown (0 %) |
Unit 2 | |
|---|---|
| Reactor critical | Critical |
| Scram | No |
| Before | Power Operation (100 %) |
| After | Power Operation (100 %) |
WEEKMONTHYEARENS 580102025-10-27T18:51:00027 October 2025 18:51:00
[Table view]10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification for Personnel Injury ENS 579682025-10-06T10:27:0006 October 2025 10:27:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification Due to Onsite Fatality ENS 571052024-05-02T19:05:0002 May 2024 19:05:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification ENS 552992021-06-09T15:15:0009 June 2021 15:15:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Loss of Capability to Activate Emergency Sirens and Offsite Notification of Same ENS 550352020-12-13T03:14:00013 December 2020 03:14:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification Due to Tritium Leakage to the Ground ENS 537412018-11-16T05:00:00016 November 2018 05:00:00 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 Transport of Potentially Contaminated Worker and Subsequent Fatality ENS 536902018-10-23T04:00:00023 October 2018 04:00:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification to Osha Due to Supplemental Employee Fatality ENS 531072017-12-07T18:01:0007 December 2017 18:01:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification of Groundwater Results to State and Local Agencies ENS 526392017-03-25T00:00:00025 March 2017 00:00:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Virginia Deq Notified of Small Glycol Release to James River ENS 504182014-08-29T18:57:00029 August 2014 18:57:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Notification to State of Virginia Required by Site Discharge Permit ENS 488602013-03-28T02:45:00028 March 2013 02:45:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release One Emergency Warning Siren Energized for a Short Time ENS 483422012-09-25T19:30:00025 September 2012 19:30:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification Due to Tritium in Overflow ENS 481942012-08-15T19:30:00015 August 2012 19:30:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification Due to Tritium in Degraded Drain Line ENS 478662012-04-26T13:55:00026 April 2012 13:55:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification Due to Death of a Bald Eagle ENS 470722011-07-19T15:13:00019 July 2011 15:13:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Inadvertent Actuation of Emergency Sirens During Exercise ENS 468662011-05-20T16:00:00020 May 2011 16:00:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Media Concern About Boat Near the Site ENS 467612011-04-16T22:55:00016 April 2011 22:55:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release, 10 CFR 50.72(b)(2)(iv)(B), RPS System Actuation, 10 CFR 50.72(a)(1)(i), Emergency Class Declaration, 10 CFR 50.72(b)(3)(iv)(A), System Actuation Unusual Event Declared Due to Loss of All Offsite Power from Tornado Damage ENS 458712010-04-25T22:05:00025 April 2010 22:05:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release One Alarm Siren Initiated Spuriously ENS 455132009-11-21T05:00:00021 November 2009 05:00:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Notification of Rescue Squad for Offsite Injury of Hunters ENS 454932009-11-13T00:00:00013 November 2009 00:00:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Notification to Us Coast Guard and Commonwealth of Virginia of Hazard to Navigation ENS 453272009-09-03T19:25:0003 September 2009 19:25:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification to Virginia Deq ENS 448912009-03-04T19:40:0004 March 2009 19:40:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Relief Valve Failure Results in Tritium and Cesium Spill ENS 428942006-10-09T15:24:0009 October 2006 15:24:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Potential Violation of Virginia Pollutant Discharge Elimination System Permit ENS 412652004-12-15T15:06:00015 December 2004 15:06:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification - Military Flare Found in Water ENS 403022003-11-07T13:30:0007 November 2003 13:30:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Release of Chemicals Into State Waters ENS 437401976-10-22T18:00:00022 October 1976 18:00:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification Due to a Small Leak - Tritium 2025-10-06T10:27:00 | |