The U.S. Department of Energy's costs for securing its facilities that house nuclear weapons and material have increased from $550 million in 2002 to around $930 million in 2010. UNDERSTANDING AND MANAGING RISK IN SECURITY SYSTEMS FOR THE DOE NUCLEAR WEAPONS COMPLEX, a congressionally requested report from the National Research Council, examines whether risk-based approaches, including probabilistic risk assessment, could be used to improve methods for determining security requirements at these facilities.
Source: National Academy of Sciences