December 2013

Targeted Review of the Safety Significant Blast Door and Special Door Interlock Systems and Review of Federal Assurance Capability at the Nevada National Security Site 

This report documents the results of an independent oversight review of safety significant Blast Door Interlock and Special Door Interlock systems at the Nevada National Security Site (NNSS) Device Assembly Facility (DAF).  The NNSS DAF is operated by National Security Technologies, LLC under contract to the National Nuclear Security Administration (NNSA) Nevada Field Office.  The Independent Oversight review was performed on site August 19-27, 2013 by the U.S. Department of Energy’s (DOE) Office of Safety and Emergency Management Evaluations, which is within the DOE Office of Health, Safety and Security.  In addition, Independent Oversight also reviewed the performance of DOE oversight, as appropriate, to provide input for its evaluation of the effectiveness of Federal assurance capability.