ENS 47534: Difference between revisions
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| event date = 12/19/2011 16:44 EST | | event date = 12/19/2011 16:44 EST | ||
| last update date = 12/19/2011 | | last update date = 12/19/2011 | ||
| title = Offsite Notification Due | | title = Offsite Notification Due to Tritium Levels Exceeding Threshold for Drinking Water | ||
| event text = At 1644 EST, on 12/19/11, TVA's Sequoyah Nuclear Plant made voluntary offsite notifications to the Tennessee Radiological Health Department Director and the Tennessee Department of Environmental Conservation - Senior Director Water Programs, to inform them of the following: | | event text = At 1644 EST, on 12/19/11, TVA's Sequoyah Nuclear Plant made voluntary offsite notifications to the Tennessee Radiological Health Department Director and the Tennessee Department of Environmental Conservation - Senior Director Water Programs, to inform them of the following: | ||
On October 31, 2011, Sequoyah proactively installed two new groundwater monitoring wells in an area known to have contained previously reported releases of tritium in an effort to further characterize and validate the scope of the plume. These releases were reported in 2006 as part of NEI's [Nuclear Energy Institute] groundwater initiative. On December 16, 2011, elevated levels of tritium were identified in water samples taken from one new onsite monitoring well. The tritium levels were confirmed to be greater than 20,000 pCi/L which is the threshold for drinking water. No groundwater monitoring wells are used for drinking or irrigation purposes onsite. The highest level sampled was 22,760 pCi/L. | On October 31, 2011, Sequoyah proactively installed two new groundwater monitoring wells in an area known to have contained previously reported releases of tritium in an effort to further characterize and validate the scope of the plume. These releases were reported in 2006 as part of NEI's [Nuclear Energy Institute] groundwater initiative. On December 16, 2011, elevated levels of tritium were identified in water samples taken from one new onsite monitoring well. The tritium levels were confirmed to be greater than 20,000 pCi/L which is the threshold for drinking water. No groundwater monitoring wells are used for drinking or irrigation purposes onsite. The highest level sampled was 22,760 pCi/L. | ||
Latest revision as of 21:05, 1 March 2018
| 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:+-4.32 h-0.18 days <br />-0.0257 weeks <br />-0.00592 months <br />) | |
| Opened: | Tim Rieger 17:25 Dec 19, 2011 |
| NRC Officer: | John Knoke |
| Last Updated: | Dec 19, 2011 |
| 47534 - NRC Website
| |
| Offsite Notification - Oil Spill [Table view] | ||