ENS 48187

v t e ENS Event
14:06 Aug 14, 2012
Title	Offsite Notification to State and Local Agencies Concerning Tritium Found in Groundwater Inleakage
Event Description	On Monday, August 13, 2012, analyses of samples taken from groundwater inleakage to the Nine Mile Point Unit 1 (NMP1) Screenhouse building confirmed the presence of tritium at concentrations of approximately 32,000 to 44,000 picocuries per liter (pCi/l). This discovery was made during the conduct of the site's ongoing groundwater monitoring program. These concentrations are above the 30,000 pCi/l threshold for voluntary reporting for a non-drinking water pathway, as indicated in Nuclear Energy Institute (NEI) 07-07, Industry Ground Water Initiative - Final Guidance Document. These test results do not indicate any threat to public health or safety, since the building inleakage is not a drinking water source, and there is no indication that tritium has migrated off the Nine Mile Point site in the groundwater. Nine Mile Point Nuclear Station, LLC, is continuing an investigation to identify the source of tritium and implement a corrective action plan. Voluntary notification of this discovery has been made to the New York State Department of Environmental Conservation and the New York State Department of Health. The licensee has notified the NRC Resident Inspector.

ENS 48187 +/-
Where
Nine Mile Point New York (NRC Region 1)
Reporting

10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release
Time - Person (Reporting Time:+-3.43 h-0.143 days <br />-0.0204 weeks <br />-0.0047 months <br />)
Opened:	John Driscoll 10:40 Aug 14, 2012
NRC Officer:	Bill Huffman
Last Updated:	Aug 14, 2012
48187 - NRC Website
v • d • e

v t e Emergency Notification System
Nine Mile Point with 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release
WEEKMONTHYEAR2021-07-19T18:58:00 [Table view]
[ENS list for Nine Mile Point]

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