ENS 50725

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v t e ENS Event
22:26 Jan 8, 2015
Title	Offsite Notification Due to Low Level Tritium Spill
Event Description	On January 7, 2015, at approximately 0700 CST, a leak to the environment was identified. Tritium was present at a concentration of 7.52E-3 uCi/mL, which is above the US Environmental Protection Agency (EPA) drinking water standard of 20,000 picocuries per liter. No other radioactive isotopes were identified. The leak rate was estimated at approximately 0.5 gpm and determined to be from the condensate head tank. Water was accumulating on the concrete-lined reactor/refuel air zone air intake plenum with some accumulation of water on the ground in the area. The intake plenum contains three floor drains. Actions were immediately taken to terminate the leak once the flowpath was identified. The flowpath was terminated two hours and 45 minutes after identification. Based on system review and analysis, any tritiated water that would have made it to the floor drains would then be mixed with incoming raw water at two million gallons per minute. This mixed volume of water would then be circulated through the plant and discharged to the river with a resultant tritium concentration that is much less than detectable levels and well below US EPA drinking water standards. The station has established increased monitoring of groundwater at designated sample wells. On January 8, 2015, at approximately 1645 CST in accordance with TVA procedures and the guidance of NEI 07-07 [Nuclear Energy Institute] for the Groundwater Protection Initiative, the licensee notified the Alabama Radiological Protection Department and Alabama Department of Environmental Management. The Limestone County Emergency Management Department will be notified. The licensee notified the NRC Resident Inspector.

ENS 50725 +/-
Where
Browns Ferry Alabama (NRC Region 2)
Reporting

10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release
Time - Person (Reporting Time:+-4.2 h-0.175 days <br />-0.025 weeks <br />-0.00575 months <br />)
Opened:	Mark Moebes 18:14 Jan 8, 2015
NRC Officer:	Jeff Rotton
Last Updated:	Jan 8, 2015
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v • d • e

v t e Emergency Notification System
Browns Ferry with 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release
WEEKMONTHYEAR2024-02-01T18:17:00 [Table view]
[ENS list for Browns Ferry]

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