ENS 52021
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ENS Event | |
|---|---|
15:06 Jun 18, 2016 | |
| Title | Offsite Notifications To Uscg National Response Center And Tema |
| Event Description | On 6/18/16 at 1106 EDT, TVA [Tennessee Valley Authority] notified the National Response Center that Watts Bar Nuclear Plant has an oil sheen on the Cooling Tower Basin.
1. Oil sheen was observed within the Cooling Tower basin at WBN [Watts Bar Nuclear]. Sheen was light brown to red and did not cover the entire Cooling Tower basin. Estimate of oil released into the Cooling Tower basin is less than 1 quart. 2. No oil sheen was visible in the Tennessee River from the bank above the diffuser pipes. 3. Notifications were also made to TEMA [Tennessee Emergency Management Agency]. 4. Follow-up observations within one hour of the sheen being reported indicated that the oil sheen had dissipated and was no longer visible. Oil levels from the suspected source did not indicate any change in oil reservoir levels. Unit 1 remains in Mode 1 at 92% power - reduced power due to main condenser back pressure limits Unit 2 remains in Mode 1 at 33% 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 | |
|---|---|
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:+-1.02 h-0.0425 days <br />-0.00607 weeks <br />-0.0014 months <br />) | |
| Opened: | Brian Mcilany 14:05 Jun 18, 2016 |
| NRC Officer: | Steve Sandin |
| Last Updated: | Jun 18, 2016 |
| 52021 - NRC Website
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Unit 1 | |
|---|---|
| Reactor critical | Critical |
| Scram | No |
| Before | Power Operation (92 %) |
| After | Power Operation (92 %) |
Unit 2 | |
|---|---|
| Reactor critical | Critical |
| Scram | No |
| Before | Power Operation (33 %) |
| After | Power Operation (33 %) |
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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