ENS 43832

v t e ENS Event
23:30 Dec 10, 2007
Title	Notification to Offsite Agencies Due to Elevated Tritium Levels
Event Description	Five new ground water monitoring wells were recently installed at Palisades Nuclear Plant in support of the Nuclear Energy institute (NEI) ground water initiative. The initial sampling of one of these wells displayed a level of tritium that triggered the communication protocol of the NEI initiative on ground water protection. On December 10, 2007, at 1830 hours0.0212 days <br />0.508 hours <br />0.00303 weeks <br />6.96315e-4 months <br />, Entergy confirmed that the tritium concentration for this well was 22,000 picoCuries per liter (pCi/l). The threshold for initiating the communication protocol is 20,000 pCi/l (Offsite Dose Calculation Manual limit for drinking water). This well is located inside the owner controlled area and inside the protected area. This well is not a drinking water source. Entergy is continuing to investigate the source of tritium identified in this well. Samples from the remaining four wells are below minimum detectable activity levels. There is no indication that tritium has migrated off the Palisades site. The licensee plans to notify the State of Michigan, Van Buren County Office of Domestic Preparedness, City of South Haven, Covert Township, and the South Haven Charter Township. The licensee has notified the NRC Resident Inspector.

ENS 43832 +/-
Where
Palisades Michigan (NRC Region 3)
Reporting

10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release
Time - Person (Reporting Time:+-1.15 h-0.0479 days <br />-0.00685 weeks <br />-0.00158 months <br />)
Opened:	Todd Mulford 22:21 Dec 10, 2007
NRC Officer:	Jason Kozal
Last Updated:	Dec 10, 2007
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v • d • e

v t e Emergency Notification System
Palisades with 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release
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