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Nuclear Nonproliferation Policy
The mission of the Nuclear Nonproliferation Policy Division (NNPD) is to promote the peaceful use of nuclear technology while simultaneously preventing the diversion and misuse of nuclear material and technology through appropriate safeguards and security, and promotion of nuclear nonproliferation policies. To achieve this mission, the objectives of the NNPD are to: Promote policy that discourages the proliferation of nuclear technology and material to inappropriate entities. Provide information to ANS members, the technical community at large, opinion leaders, and decision makers to improve their understanding of nuclear nonproliferation issues. Become a recognized technical resource on nuclear nonproliferation, safeguards, and security issues. Serve as the integration and coordination body for nuclear nonproliferation activities for the ANS. Work cooperatively with other ANS divisions to achieve these objective nonproliferation policies.
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ANS Student Conference 2025
April 3–5, 2025
Albuquerque, NM|The University of New Mexico
Standards Program
The Standards Committee is responsible for the development and maintenance of voluntary consensus standards that address the design, analysis, and operation of components, systems, and facilities related to the application of nuclear science and technology. Find out What’s New, check out the Standards Store, or Get Involved today!
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Latest News
Fabrication milestone for INL’s MARVEL microreactor
A team from Idaho National Laboratory and the Department of Energy’s Office of Nuclear Energy (DOE-NE) recently visited Carolina Fabricators Inc. (CFI), in West Columbia, S.C., to launch the fabrication process for the primary coolant system of the MARVEL microreactor. Battelle Energy Alliance (BEA), which manages INL, awarded the CFI contract in January.
Raymond C. Lloyd, E. Duane Clayton, Robert E. Wilson, Robert C. McBroom, Robert R. Jones
Nuclear Technology | Volume 79 | Number 1 | October 1987 | Pages 82-91
Technical Paper | Nuclear Safety | doi.org/10.13182/NT87-A16006
Articles are hosted by Taylor and Francis Online.
The critical experiments reported provide data for the effect of a soluble neutron absorber (cadmium nitrate) on the criticality of high-enriched uranium nitrate solution. These data can be used in criticality control and for validation of calculational methods. The experiments were performed with cylindrical vessels of two different diameters, 241.8 and 291.6 mm. Cadmium concentrations used in the high-enriched uranium solution ranged up to ∼11 g Cd/ℓ. The vessels were reflected with water, and in some cases with water containing dissolved cadmium nitrate. The cadmium was found to be an effective neutron absorber when dissolved in the solution. The critical experiment data were analyzed by several different calculational methods, which showed the calculated keff values to increase as the cadmium concentration was increased. (The critical system calculated as supercritical.) The trend of the analysis results suggests that the neutron leakage or cadmium absorption may be underestimated for systems with a harder neutron spectrum.
