Y-12 National Security Complex

Y-12 National Security Complex’s primary mission is to support of the DOE nuclear weapons stockpile maintenance program. Activities include assembly and disassembly of nuclear weapons components, secure storage of special nuclear material (SNM), and various other nuclear weapons-related activities. Other activities include various aspects of testing and development, nonproliferation, and technology transfer.

Independent Limited-notice Performance Test Assessment of Safeguards and Security at the Y-12 National Security Complex, May 31, 2024

Independent Multi-Topic Assessment of Safeguards and Security at the Y-12 National Security Complex, September 13, 2023

Independent Limited-Notice Performance Test Assessment of Safeguards and Security at the Y-12 National Security Complex, May 23, 2022

Independent Limited-Notice Performance Test Assessment of Safeguards and Security at the Y-12 National Security Complex, September 9, 2021

Office of Security Assessments Safeguards and Security Assessment at the Y-12 National Security Complex, July 22, 2019

Results of Limited-Notice Performance Tests at the Y-12 National Security Complex, Conducted September 25-27, 2018

Independent Assessment of the Y-12 National Security Complex Unclassified and Classified Cyber Security Programs, January 2018

Results of Limited-Notice Performance Tests at the Y-12 National Security Complex, Conducted on May 23-24, 2017

Office of Enterprise Assessments Security Assessment of the Y-12 National Security Complex, November 28, 2016

Results of Limited-Notice Performance Tests at the Y-12 National Security Complex, Conducted April 12-13, 2016

Results of Limited-Notice Performance Tests at the Y-12 National Security Complex Conducted on November 3-4, 2015

Office of Enterprise Assessments Security Inspection of Classified Matter Protection and Control at the Y-12 National Security Complex, September 21, 2015

Independent Review of the Unclassified Cyber Security Program at the Y-12 National Security Complex, July 2015

Office of Enterprise Assessments Safeguards and Security Inspection at the Y-12 National Security Complex, January 9, 2015

Summary Report of Inspection Findings Following the July 28, 2012 Security Incident at the Y-12 National Security Complex, April 2014

Independent Oversight Safeguards and Security Progress Review at the Y-12 National Security Complex, June 14, 2013

Inspection of the National Nuclear Security Administration’s Y-12 National Security Complex, September 2012

Independent Oversight Inspection of the Classified Cyber Security Program at the Y-12 National Security Complex – May 2012

Independent Oversight Management Summary Assessment of Protective Force at the Y-12 National Security Complex, November 19, 2010

Independent Oversight Special Review of the Incidents of Security Concern and Lock and Key Programs at the Y-12 National Security Complex, October 1, 2010

Independent Oversight Safeguards and Security Inspection of the Y-12 Site Office and the Y-12 National Security Complex, January 14, 2009

Independent Oversight Safeguards and Security Inspection of Y-12, Volume I, Security, July 2005

Independent Oversight Safeguards and Security and Cyber Security Inspection of the Y-12 Site Office and Y-12 National Security Complex, January 2004

Independent Oversight Inspection of Safeguards and Security at the Y-12 National Security Complex, November 28, 2001

NNSA Production Office (NPO)