Morning Report for December 20, 2000
Headquarters Daily Report DECEMBER 20, 2000 *************************************************************************** REPORT NEGATIVE NO INPUT ATTACHED INPUT RECEIVED RECEIVED HEADQUARTERS X REGION I X REGION II X REGION III X REGION IV X PRIORITY ATTENTION REQUIRED MORNING REPORT - REGION II DEC. 20, 2000 Licensee/Facility: Notification: Agreement State MR Number: 2-00-0026 Gts Duratek Date: 12/20/00 Memphis,Tennessee License No: R-79171 Subject: CONTAMINATION EVENT Discussion: On December 19, 2000, the State of Tennessee Division of Radiological Health notified the NRC of a contamination event at the GTS Duratek facility located in Memphis, Tennessee. GTS Duratek is licensed by the State of Tennessee to process radioactive waste and decontaminate equipment. At about 4:00 p.m. on December 18, 2000, the licensee experienced a component failure in the fire sprinkler system installed in the Large Component Facility (LCF). The LCF was being used to decontaminate steam generators removed from the Maine Yankee nuclear power plant. The failure resulted in sprinkler system water draining into the LCF. Runoff water from the sprinkler system became contaminated with cobalt 60 (Co-60) and spread throughout the LCF and outside of the building and onto the ground. A storm drain located outside of the building was reported covered by licensee personnel before runoff water reached the drain. All of the affected areas were within the licensee's existing restricted area. The licensee performed surveys of the areas outside of the building and identified radiation levels that were slighted above background radiation levels. Analysis of soil samples measured 8.6 - 16 picocuries of Co-60 per gram of soil (pCi/gm). The surface soil unrestricted release screening value for Co-60 specified by NRC in a Federal Register Notice dated December 7, 1999 is 3.8 pCi/gm. Analysis of water samples collected from the storm drain found a maximum concentration of 3.7 X10-8 picocuries of Co-60 per milliliter of water (pCi/ml). The maximum allowable liquid effluent concentration for release to an unrestricted area for Co-60 specified in 10 CFR 20, Appendix B, Table 2, Column 2 is 3 pCi/ml. The licensee is decontaminating the LCF and will remediate the soil when the ground thaws. The State of Tennessee was informed of this event by the licensee and conducted a reactive inspection on December 19, 2000. Region II received initial notification of this occurrence by telephone from the Headquarters Operations Officer on December 19, 2000, at 2:00 p.m. The information presented herein has been discussed with the State of Tennessee, and is current as of 1:00 p.m. on December 20, 2000. Contact: John Pelchat (404)562-4729 Jay Henson (404)562-4731 _
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