Nuclear weapons (21 - 30 of 42 items)
Nuclear Material: Several Potential Options for Dealing with DOE's Depleted Uranium Tails Could Benefit the Government
GAO-08-613T: Published: Apr 3, 2008. Publicly Released: Apr 3, 2008.
Since the 1940s, the Department of Energy (DOE) has been processing natural uranium into enriched uranium, which has a higher concentration of the isotope uranium-235 that can be used in nuclear weapons or reactors. This has resulted in over 700,000 metric tons of leftover depleted uranium, also known as "tails," that have varying residual concentrations uranium-235. The tails are stored at DOE's...
Nuclear Material: DOE Has Several Potential Options for Dealing with Depleted Uranium Tails, Each of Which Could Benefit the Government
GAO-08-606R: Published: Mar 31, 2008. Publicly Released: Apr 2, 2008.
Since the 1940s, one mission of the Department of Energy (DOE) and its predecessor agencies has been processing uranium as a source of nuclear material for defense and commercial purposes. A key step in this process is the enrichment of natural uranium, which increases its concentration of uranium-235, the isotope of uranium that undergoes fission to release enormous amounts of energy. Before it c...
Nuclear Cleanup: Preliminary Results of the Review of the Department of Energy's Rocky Flats Closure Projects
GAO-05-1044R: Published: Sep 22, 2005. Publicly Released: Sep 22, 2005.
For about 40 years, the Department of Energy's Rocky Flats site, near Denver, served as a production facility that made plutonium triggers, or "pits," for nuclear weapons. That role resulted in radiological and chemical contamination of many of the site's buildings and its soil and water. Cleanup of the site, which commenced in 1996, has been a monumental undertaking. The cleanup is being conducte...
Nuclear Nonproliferation: Limited Progress in Improving Nuclear Material Security in Russia and the Newly Independent States
RCED/NSIAD-00-82: Published: Mar 6, 2000. Publicly Released: Mar 6, 2000.
Pursuant to a congressional request, GAO reviewed the Department of Energy's (DOE) Material Protection, Control, and Accounting program, which is designed to improve nuclear material security in Russian facilities, focusing on the: (1) number of buildings that have received nuclear material security systems and the amount of nuclear material that is protected under the systems; and (2) program's c...
Nuclear Nonproliferation: Concerns With DOE's Efforts to Reduce the Risks Posed by Russia's Unemployed Weapons Scientists
RCED-99-54: Published: Feb 19, 1999. Publicly Released: Feb 19, 1999.
Pursuant to a congressional request, GAO reviewed the Department of Energy's (DOE) efforts to create jobs for displaced former Soviet Union scientists through its Initiatives for Proliferation Prevention program, focusing on: (1) the costs to implement the program for fiscal years 1994-98, including the amount of funds received by weapons scientists and institutes; (2) the extent to which the prog...
Nuclear Nonproliferation and Safety: Uncertainties About the Implementation of U.S.-Russian Plutonium Disposition Efforts
RCED-98-46: Published: Jan 14, 1998. Publicly Released: Jan 20, 1998.
Pursuant to a congressional request, GAO provided information on: (1) the goals of the Department of Energy's (DOE) plutonium disposition program and the impediments facing its implementation; (2) U.S. government officials' views on the importance of a U.S.-Russian agreement on plutonium disposition and the status of efforts to negotiate an agreement; (3) the costs to implement plutonium dispositi...
Nuclear Weapons Complex: Weaknesses in DOE's Nonnuclear Consolidation Plan
RCED-93-56: Published: Nov 19, 1992. Publicly Released: Nov 19, 1992.
Pursuant to a congressional request, GAO reviewed the Department of Energy's (DOE) plans for consolidating nonnuclear weapons production facilities, focusing on the DOE Nonnuclear Consolidation Plan's (NCP) scope, cost analysis, and technical risk assessment.GAO found that: (1) the selection of a single site as the preferred consolidation option was flawed because DOE did not fully consider other...
Nuclear Weapons Complex: Improving DOE's Management of the Environmental Cleanup
T-RCED-92-43: Published: Mar 30, 1992. Publicly Released: Mar 30, 1992.
GAO discussed the overall management systems that the Department of Energy (DOE) will need to oversee the cleanup of the nation's nuclear weapons complex. GAO noted that: (1) DOE has put considerable effort into developing management systems to set priorities, estimate project costs, and track clean-up progress, but further efforts will be needed to provide management systems that ensure that clea...
Nuclear Weapons Complex: Reconfiguring DOE's Weapons Complex
T-RCED-91-40: Published: Apr 18, 1991. Publicly Released: Apr 18, 1991.
GAO discussed the Department of Energy's (DOE) efforts to develop long-term modernization plans to address environmental and safety problems of its aging nuclear weapons complex. GAO noted that: (1) DOE still needs to make key decisions about the size of the complex, where to relocate plutonium operations, which technologies to use for new tritium production, and what to do with excess production;...
Nuclear Materials: GAO's Views on Decreasing Tritium Requirements and Their Effect on DOE Programs
T-RCED-91-21: Published: Mar 13, 1991. Publicly Released: Mar 13, 1991.
GAO discussed the Department of Energy's (DOE) tritium supplies, focusing on: (1) DOE projections of tritium requirements and supplies; and (2) the impact of future tritium supplies on DOE programs. GAO noted that: (1) the projected U.S. defense tritium requirements and planned nuclear weapons decreased dramatically from 1988 through 1990 and could decrease further; (2) sufficient tritium supplies...