ENS 52163
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ENS Event | |
---|---|
18:15 Aug 9, 2016 | |
Title | Offsite Notification Due to Oil Sheen in Cooling Tower Basin |
Event Description | On 8/09/2016 at 1415 EDT, TVA [Tennessee Valley Authority] notified the National Response Center that Watts Bar Nuclear [WBN] Plant has noted an oil sheen in the Unit 2 Cooling Tower Basin. An oil sheen was observed within the Unit 2 Cooling Tower Basin at WBN. The sheen did not cover the entire cooling tower basin. The sheen covered approximately 4 square feet. No oil sheen was visible in the yard holding ponds or Tennessee river from the bank above the diffuser pipes. Notifications were also made to TEMA [Tennessee Emergency Management Agency]. Oil levels from the suspected source did not indicate any change in oil reservoir levels.
Unit 1 remains in Mode 1 at 85 [percent] power - reduced power due to main condenser back pressure limits. Unit 2 remains in Mode 1 at 25 [percent] power - initial startup testing. This event is reportable under 10 CFR 50.72(b)(2)(xi) as a condition that was reported to an outside Government Agency. The NRC Resident Inspector has been notified. |
Where | |
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Watts Bar ![]() Tennessee (NRC Region 2) | |
Reporting | |
10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release | |
Time - Person (Reporting Time:+-1.28 h-0.0533 days <br />-0.00762 weeks <br />-0.00175 months <br />) | |
Opened: | Matthew Robertson 16:58 Aug 9, 2016 |
NRC Officer: | Steven Vitto |
Last Updated: | Aug 9, 2016 |
52163 - NRC Website
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Unit 1 | |
---|---|
Reactor critical | Critical |
Scram | No |
Before | Power Operation (85 %) |
After | Power Operation (85 %) |
Unit 2 | |
---|---|
Reactor critical | Critical |
Scram | No |
Before | Power Operation (25 %) |
After | Power Operation (25 %) |
WEEKMONTHYEARENS 568502023-11-12T08:00:00012 November 2023 08:00:00
[Table view]10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification ENS 555902021-11-18T04:10:00018 November 2021 04:10:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Non-Work Related On-Site Fatality ENS 555502021-10-28T17:40:00028 October 2021 17:40:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification Due to Two Monitoring Wells Exceeding NEI GPI Tritium Threshold Values ENS 547532020-06-22T17:04:00022 June 2020 17:04:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification - Groundwater Initiative ENS 524002016-11-29T12:32:00029 November 2016 12:32:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification Due to Chemical Spill Onsite ENS 521632016-08-09T18:15:0009 August 2016 18:15:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification Due to Oil Sheen in Cooling Tower Basin ENS 521262016-07-26T19:36:00026 July 2016 19:36:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification Due to Oil Sheen in Cooling Tower Basin ENS 520212016-06-18T15:06:00018 June 2016 15:06:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notifications to Uscg National Response Center and Tema ENS 518852016-04-27T02:13:00027 April 2016 02:13:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release, 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Alert and Notification System Feedback System Inoperable ENS 505802014-10-30T15:00:00030 October 2014 15:00:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification and Press Release Regarding Boone Dam Stability Issues ENS 499502014-03-24T16:55:00024 March 2014 16:55:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification Due to Death of Employee ENS 497362014-01-17T16:43:00017 January 2014 16:43:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification Due to Onsite Death of an Employee ENS 496502013-12-18T14:32:00018 December 2013 14:32:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification Due to Contract Employee Collapsing within the Protected Area ENS 489502013-04-21T06:11:00021 April 2013 06:11:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release, 10 CFR 50.72(a)(1)(i), Emergency Class Declaration Notification of Unusual Event Due to Shots Fired within the Owner Controlled Area ENS 480752012-07-06T14:12:0006 July 2012 14:12:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Loss of 7 Offsite Sirens Due to Inclement Weather ENS 473482011-10-18T00:50:00018 October 2011 00:50:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release, 10 CFR 50.72(a)(1)(i), Emergency Class Declaration Unit 1 Declared an Unusual Event Based on Ammonia Levels Exceeding Osha Limits ENS 470212011-07-04T17:36:0004 July 2011 17:36:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification Due to Spurious Siren Activation ENS 469672011-06-16T17:09:00016 June 2011 17:09:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Chemical Release from Intake Pumping Station. ENS 464692010-12-06T13:15:0006 December 2010 13:15:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification - Osha Contacted Due to Fatality of Contractor Employee ENS 464482010-12-02T21:10:0002 December 2010 21:10:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification Due to an Individual Contamination ENS 430022006-11-21T11:15:00021 November 2006 11:15:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release, 10 CFR 50.72(a)(1)(i), Emergency Class Declaration Unusual Event Declared Due to Unidentified Leakage ENS 414002005-02-10T22:01:00010 February 2005 22:01:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification Due to Tritium Sample Exceeding Offsite Dose Calculation Manual (Odcm) Reporting Level ENS 410492004-09-17T09:00:00017 September 2004 09:00:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release, 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Emergency Siren Capability and Notification of Offsite Agency 2023-11-12T08:00:00 | |
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