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Division Spotlight
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.
Meeting Spotlight
Conference on Nuclear Training and Education: A Biennial International Forum (CONTE 2025)
February 3–6, 2025
Amelia Island, FL|Omni Amelia Island Resort
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
Senate committee hears from energy secretary nominee Chris Wright
Wright
Chris Wright, president-elect Trump’s pick to lead the U.S. Department of Energy, spent hours today fielding questions from members of the U.S. Senate’s committee on Energy and Natural Resources.
During the hearing, Wright—who’s spent most of his career in fossil fuels—made comments in support of nuclear energy and efforts to expand domestic generation in the near future. Asked what actions he would take as energy secretary to improve the development and deployment of SMRs, Wright said: “It’s a big challenge, and I’m new to government, so I can’t list off the five levers I can pull. But (I’ve been in discussions) about how to make it easier to research, to invest, to build things. The DOE has land at some of its facilities that can be helpful in this regard.”
T. J. Downar, J. A. Stillman
Nuclear Science and Engineering | Volume 94 | Number 3 | November 1986 | Pages 241-250
Technical Paper | doi.org/10.13182/NSE86-A17267
Articles are hosted by Taylor and Francis Online.
A model is developed to generate homogenized, two-group cross-section data for pressurized water reactor (PWR) fuel assemblies loaded with burnable absorbers by explicitly incorporating the effects of the neutron poison into the unpoisoned group constants. This provides the calculational freedom to use the assembly burnable absorber loading as an independent variable in dynamic search methods for optimizing low-leakage PWR core reloads. To achieve an accuracy of better than 0.2% in the assembly k∞, separate consideration is given to the absorption and scattering perturbations, as well as to the spectrum-hardening effects caused by the presence of burnable absorbers in the assembly. The model was validated first by comparison of unit assembly cross sections to data from reference calculations and then by use of the model in the Electric Power Research Institute nodal code SIMULATE-E and comparison to reference core power distributions.
