ENS 49738
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ENS Event | |
|---|---|
19:00 Jan 17, 2014 | |
| Title | Fuel Oil Found During Core Drilling |
| Event Description | On January 17, 2014, at 1400 EST Sequoyah (SQN) notified the Tennessee Department of Environment and Conservation (TDEC) of a condition that was identified on December 4, 2013, while conducting core samples. The core drilling contractor detected a petroleum odor, notified the SQN Environmental Group who observed the core drilling and confirmed a slight petroleum odor from a core boring in which water was detected at approximately 41 feet below the ground surface. At that time, as a result of the type of core drilling that was conducted, TVA could not verify if there were petroleum products in the groundwater.
SQN obtained geoprobe boring samples to determine the extent and the depth of the petroleum. Petroleum product was detected in the soil between 30 and 35 feet in depth. This condition has been determined to be associated with a legacy diesel fuel oil leak at SQN in the 1990's and was previously reported. SQN previously completed a remediation project from 1992 - 2010, with oversight from TDEC. The petroleum product appears to be isolated at approximately 30 to 35 feet in depth, is in a perched water table not utilized for drinking water, and appears to be isolated to the diesel building area. To verify the petroleum product is isolated; TVA is conducting additional geoprobe boring to help define the limited area impacted by the legacy diesel fuel oil leak. The Sequoyah NRC Resident Inspectors have been notified. |
| Where | |
|---|---|
Sequoyah  Tennessee (NRC Region 2) | |
| Reporting | |
| 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release | |
| Time - Person (Reporting Time:+-4.1 h-0.171 days <br />-0.0244 weeks <br />-0.00562 months <br />) | |
| Opened: | Rusty Whitehead 14:54 Jan 17, 2014 |
| NRC Officer: | Charles Teal |
| Last Updated: | Jan 17, 2014 |
| 49738 - NRC Website | |
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 565922023-06-27T12:31:00027 June 2023 12:31:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification ENS 549182020-09-28T15:43:00028 September 2020 15:43:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release | Offsite Notification - Oil Spill ENS 537542018-11-26T05:00:00026 November 2018 05:00:00 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 for Excessive Smoke in Containment ENS 536802018-10-21T04:00:00021 October 2018 04:00:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification Due to Death of Employee on Site ENS 532702018-03-19T04:30:00019 March 2018 04:30:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Two Contractors Injured by Arc Flash ENS 524262016-12-13T19:10:00013 December 2016 19:10:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification - Water Containing Tritium Spilled Into Storm Drain ENS 507572015-01-23T16:50:00023 January 2015 16:50:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notifications Due to Oil Sheen on Intake Bay ENS 505812014-10-30T16:20:00030 October 2014 16:20:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification Regarding Boone Dam Stability Issues ENS 497382014-01-17T19:00:00017 January 2014 19:00:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Fuel Oil Found During Core Drilling ENS 480742012-07-06T14:12:0006 July 2012 14:12:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Loss of 21 Offsite Sirens Due to Inclement Weather ENS 479592012-05-24T19:41:00024 May 2012 19:41:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification Due to Oil Sheen on the River ENS 479222012-05-14T14:24:00014 May 2012 14:24:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification Due to Oil Sheen Observed on Diffuser Pond ENS 475342011-12-19T21:44:00019 December 2011 21:44:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification Due to Tritium Levels Exceeding Threshold for Drinking Water ENS 472562011-09-12T17:05:00012 September 2011 17:05:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification to the Tennessee Department of Environment and Conservation (Tdec) ENS 470452011-07-13T04:23:00013 July 2011 04:23:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Overflow of Condenser Circulating Water ENS 467902011-04-27T14:30:00027 April 2011 14:30:00 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 Sirens Due to Loss of Electric Power ENS 461952010-08-21T19:09:00021 August 2010 19:09:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Notification of State Agencies Due Leak of a Water Treatment Chemical ENS 456682010-01-31T15:42:00031 January 2010 15:42:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Tema Notified of a Loss of Emergency Sirens ENS 453952009-09-30T19:21:00030 September 2009 19:21:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification to Various Government Agencies ENS 453532009-09-16T16:20:00016 September 2009 16:20:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification Made After Discovery of an Oil Sheen ENS 451722009-06-29T15:34:00029 June 2009 15:34:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification Due to Possible Release of Fuel Oil to the Environment ENS 450642009-05-13T19:05:00013 May 2009 19:05:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Track Hoe Slid Into Intake Forebay ENS 406552004-04-08T12:45:0008 April 2004 12:45:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Off Site Notification 2023-06-27T12:31:00 [Table view] | |
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