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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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2024 ANS Winter Conference and Expo
November 17–21, 2024
Orlando, FL|Renaissance Orlando at SeaWorld
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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New laws offer nuclear industry incentives for existing power plant uprates
This year, the U.S. nuclear industry received a much-needed economic boost that could help preserve operating nuclear power plants and incentivize upgrades that extend their lifespan and power output.
Signed into law in 2022, the Inflation Reduction Act offers production tax credits (PTCs) for existing nuclear power plants and either PTCs or investment tax credits (ITCs) for new carbon-free generation. These credits could make power uprates—increasing the maximum power level at which a commercial plant may operate—a much more appealing option for utilities.
Do Heon Kim, Hangbok Choi, Won Sik Yang, Jong Kyung Kim
Nuclear Science and Engineering | Volume 137 | Number 1 | January 2001 | Pages 23-37
Technical Paper | doi.org/10.13182/NSE01-A2173
Articles are hosted by Taylor and Francis Online.
The effect of DUPIC fuel composition heterogeneity on CANDU core performance was assessed for three candidate DUPIC fuel options: the fissile content adjustment method, reactivity control by slightly enriched and depleted uranium, and reactivity control by natural uranium. The fissile content adjustment method produces DUPIC fuel of fixed 235U and 239Pu contents, while the reactivity control method produces DUPIC fuel of uniform reactivity at the fresh condition. To assess the uncertainty of the core performance parameter associated with the isotopic variation, the sensitivity coefficients were generated by the generalized perturbation theory for the lattice parameter and zone controller level perturbations. The uncertainty was then estimated for three key core performance parameters: maximum channel power (MCP), maximum bundle power (MBP), and channel power peaking factor (CPPF). The fissile content adjustment method was shown to have a smaller uncertainty in the core performance parameter than with the reactivity control options. For the fissile content adjustment method, the average uncertainties of MCP, MBP, and CPPF were estimated to be 1.3, 2.5, and 1.2%, respectively, with 95% confidence level, when simulated for specified burnup points of the equilibrium core.