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Enforcement Letter, NEL-2013-02 - February 12, 2013

February 12, 2013

Issued to Los Alamos National Security, LLC related to a Radiological Contamination Event at the Los Alamos Neutron Science Center at Los Alamos National Laboratory

The Office of Health, Safety and Security' s Office of Enforcement and Oversight conducted an evaluation of the deficiencies at the Los Alamos Neutron Science Center (LANSCE) described in the Los A lamos National Security, LLC (LANS) Noncomplia nce Tracking System (NTS) report NTS --LASO-LANS-LANL-2012-0018, LANSCE Contamination Event, dated September 10, 2012. Our evaluation included a review of the Federal accident investigation report, Accident Investigation into Contamination at the Los Alamos Neutron Science Center on or about August 21, 2012, dated September 2012; the associated corrective action plan; and discussions with site personnel.