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Enforcement Letter, NEL-2011-03 - October 24, 2011

October 24, 2011

Issued to EnergySolutions, LLC related to a Radiological Contamination Event at the Separations Process Research Unit at the Knolls Atomic Power Laboratory

The Office of Health, Safety and Security's Office of Enforcement and Oversight conducted an evaluation of the radiological contamination event at the Separations Process Research Unit (SPRU) Building H2 Tank Farm Weather Enclosure located at the Knolls Atomic Power Laboratory in Niskayuna, New York.  On February 17, 2011, URS Washington Group International, Inc. (URS), the U.S. Department of Energy (DOE) prime contractor, reported an assessment of this event in the Occurrence Reporting and Processing System report EM---WGI-G2H2-2011-0001, Higher Than Expected Contamination Levels Inside H2 Tank Farm Weather Enclosure.