ENS 41101

v t e ENS Event
18:00 Oct 7, 2004
Title	Offsite Notification Due to an Unscheduled Release
Event Description	The licensee provided the following information via facsimile: [The] Maine Emergency Management Agency [was notified] of an unscheduled release that occurred during the 24 hour2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> period ending at midnight on Thursday, 10/07/04. Maine Yankee identified a minor release of 3.18 E-6 Curies of liquid from the site. This release exceeded the value projected for this period and is therefore classified as unscheduled. The total liquid release resulted in a minor exposure value of 2.21 E-5 millirem. The cause of the release resulted from groundwater intrusion of the outfall piping during soil remediation and failure of the clay barrier that was installed. [The] release occurred from 9/30/04 until 10/6/04. The outfall piping is being removed and the area backfilled to eliminate liquid releases via this pathway. The licensee stated that the radionuclides involved were Cesium-137, Bismuth-214, and Lead-214. The licensee has notified the NRC Region 1 (Roberts).

ENS 41101 +/-
Where
Maine Yankee Maine (NRC Region 1)
Reporting

10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release
Time - Person (Reporting Time:+-2.52 h-0.105 days <br />-0.015 weeks <br />-0.00345 months <br />)
Opened:	Doug Kinney 15:29 Oct 7, 2004
NRC Officer:	Bill Huffman
Last Updated:	Oct 7, 2004
41101 - NRC Website
v • d • e

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