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  Doe Sites
 Nevada National Security Site
                          
                  


    Image of two men working at the Nevada National Security Site
    
          

    
          
  
Nevada National Security Site (NV) – The NNSS (formerly the Nevada Test site) is an extensive outdoor laboratory and national experiment center located in southern Nevada, about 75 miles northwest of Las Vegas. Activities at the site include preparations for the disposition of damaged nuclear weapons, subcritical experiments, criticality experiments, emergency response training, and waste management. While underground testing has not been conducted in many years, the site is maintained in a state of readiness should testing be resumed.
  
        Abbreviation
            NNSSLocation
            75 miles outside
                  Las Vegas
              ,                     NV
              United States
                                            37° 5' 48.0084" N, 116° 29' 27.9852" W
      See map: Google Maps
  Nevada        USWebsite
            https://nnss.gov/Primary Function
            Support the nation's nuclear stockpile, including storage, assessment, disposal and testing, if it were to be resumed.Ongoing Operations
            Evaluation of sensor technologies, detection, characterization, and monitoring of nuclear weapons related activities, radiological emergency training, environmental restoration, groundwater characterization, and low-level radioactive waste management.Status
            Active

Related Letters



    2023
    Date
                          Title
                          DocumentDecember 12, 2023
                          90 Percent Complete Documented Safety Analysis for the DAF at NNSS
                          PDF iconPDF
2022
    Date
                          Title
                          DocumentJune 16, 2022
                          National Criticality Experiments Research Facility Criticality Safety Program
                          PDF iconPDF
2021
    Date
                          Title
                          DocumentAugust 26, 2021
                          Safety Basis for the Radioactive Waste Facilities at NNSS
                          PDF iconPDF
2019
    Date
                          Title
                          DocumentMarch 21, 2019
                          Device Assembly Facility Seismic Hazard
                          PDF iconPDF
2018
    Date
                          Title
                          DocumentDecember 19, 2018
                          Board letter identifying safety items for the U1a complex at the Nevada National Security Site
                          PDF iconPDF
2011
    Date
                          Title
                          DocumentJune 22, 2011
                          DOE Response to March 28, 2011, Board Letter and Staff Issue Report on Work Planning and Control Deficiencies at the Nevada National Security Site
                          PDF iconPDFFebruary 10, 2011
                          DOE Responds to the Board Letter of August 5, 2010, Regarding Safety Issues at the Criticality Experiments Facility (CEF) at Nevada National Security Site
                          PDF iconPDF
2010
    Date
                          Title
                          DocumentOctober 20, 2010
                          DOE Letter Requesting an Extension in Response to Board's Letter to Provide Briefings and Reports for the Critical Experiments Facility at the Nevada National Security Site
                          PDF iconPDF
2009
    Date
                          Title
                          DocumentJuly 28, 2009
                          Board Issues a Reporting Requirement for a Briefing in October, 2009, on Modification or Upgrades Planned for the Fire Suppression System to Provide Safety-Related Function at the Device Assembly Facility, Nevada Test Site
                          PDF iconPDFJuly 28, 2009
                          Request for briefing by NNSA regarding modifications or upgrades to fire suppression systems in the Device Assembly Facility (DAF) at the Nevada Test Site
                          PDF iconPDF
2008
    Date
                          Title
                          DocumentAugust 18, 2008
                          DOE Update on the Commitment Made to the Board Regarding the Availability and Reliability of the Device Assembly Facility Fire Suppression System at the Nevada Test Site
                          PDF iconPDF
2007
    Date
                          Title
                          DocumentDecember 21, 2007
                          DOE Letter Regarding NNSA's Plans for Preparing the G-Tunnel for the Limited Possibility that it will be used for Disposition of an Improvised Nuclear Device (IND)
                          PDF iconPDFDecember 20, 2007
                          DOE Letter Regarding the Project Underway at the Nevada Test Site.
                          PDF iconPDFNovember 30, 2007
                          DOE Letter Summarizing the Results Regarding the Completion of Phase 1 and Phase 2 Assessments of the Safety Management Programs and Safety Related Structures, Systems, and Components at the Device Assembly Facility at the Nevada Test Site
                          PDF iconPDFOctober 15, 2007
                          NNSA Transfer of Responsibility at Nevada Test Site to the Management and Operations Contractor at NTS
                          PDF iconPDF
2006
    Date
                          Title
                          DocumentSeptember 22, 2006
                          Board Issues a Reporting Requirement to DOE for a Report to be Submitted when the CD-3 Approval Request Package is Submitted Addressing Safety Related Issues Identified by Board in March 27, 2006 Board Letter
                          PDF iconPDFJuly 18, 2006
                          DOE Submits Results of Actions Specified by Board in Letter of July 1, 2003, Regarding Site-Wide Lightning Protection and Detection at Nevada Test Site
                          PDF iconPDFJune 19, 2006
                          Board Issues a Reporting Requirement to DOE for a Report within 60 Days Describing its Plans for the Staging, Assessment, and Disposition of a Damaged Nuclear Weapon or Improvised Nuclear Device, G-Tunnel
                          PDF iconPDFJune 19, 2006
                          Plans for Staging, Assessing, and Disposition of a Damaged Nuclear Weapon or Improvised Nuclear Device at the G-Tunnel at NTS
                          PDF iconPDFApril 26, 2006
                          DOE Device Assembly Facility Safety Basis Implementation Plan
                          PDF iconPDFMarch 13, 2006
                          DOE Results of Device Assembly Facility Survey of Leak and Crack Loocations
                          PDF iconPDF
2005
    Date
                          Title
                          DocumentNovember 28, 2005
                          Board Issues a Reporting Requirement to NNAA for a Report and Briefing within 60 Days on what Additional Actions will be Taken to Address the Board's Comments on Device Assembly Facility
                          PDF iconPDFJune 15, 2005
                          Building Leaks and Structural Cracks at the Device Assembly Facility at the Nevada Test Site
                          PDF iconPDFMay 16, 2005
                          Results of a Condition Assessment and Mapping of Building Leaks and Structural Cracks at the Device Assembly Facility At the Nevada Test Site
                          PDF iconPDFFebruary 8, 2005
                          Device Assembly Facility Operations at the Nevada Test Site
                          PDF iconPDF
2004
    Date
                          Title
                          DocumentOctober 27, 2004
                          Board Issues a Reporting Requirement to NNSA for a Report within 90 Days on Archiving Activities Regarding Recommendation 93-6 Implementation Plan
                          PDF iconPDFJuly 15, 2004
                          DOE Training Assessment for the Device Assembly Facility at the Nevada Site Office
                          PDF iconPDFMay 14, 2004
                          DOE Review of Electrical and Lightning Protection and Detection Systems for Facilities at the Nevada Test Site
                          PDF iconPDFApril 27, 2004
                          DOE Schedule for the Training Assessment of the Device Assembly Facility
                          PDF iconPDF
2002
    Date
                          Title
                          DocumentOctober 30, 2002
                          DOE Initial Phase II Assessment Report from the Nevada Operations Office, Waste Examination Facility, Visual Examination and Repackaging Building, Confinement Ventilation System Relative to the 2000-2 Implementation Plan
                          PDF iconPDF
1997
    Date
                          Title
                          DocumentOctober 9, 1997
                          Board Commends the Nevada Site Office and the Joint Test Organization on HOLOG Experiment
                          PDF iconPDFSeptember 29, 1997
                          DOE Encloses on Status of Actions at NTS and Pantex Concerning to Recommendation 93-6
                          PDF iconPDF
1996
    Date
                          Title
                          DocumentMarch 26, 1996
                          Board Commends James K. Magruder on the Occasion of his Retirement
                          PDF iconPDFMarch 21, 1996
                          DOE Response to Board's Review of NESS Performed by the Nevada Operations Office
                          PDF iconPDFFebruary 2, 1996
                          DOE Forwards Three 93-6 Implementation Plan Deliverables
                          PDF iconPDF
1993
    Date
                          Title
                          DocumentDecember 8, 1993
                          Board Letter Regarding Staff Trip Report to Nevada Test Site and Pantex Plant
                          PDF iconPDFNovember 15, 1993
                          Board Forwards Staff Trip Report on the Order Compliance Self-Assessment Program at Nevada Test Site
                          PDF iconPDFSeptember 23, 1993
                          Board Forwards Staff Trip Report on Knowledge and Training of Personnel at Nevada Test Site
                          PDF iconPDF


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Washington, DC 20004
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