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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
International Conference on Mathematics and Computational Methods Applied to Nuclear Science and Engineering (M&C 2025)
April 27–30, 2025
Denver, CO|The Westin Denver Downtown
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
Judge temporarily blocks DOE’s move to slash university research funding
A group of universities led by the American Association of Universities (AAU) acted swiftly to oppose a policy action by the Department of Energy that would cut the funds it pays to universities for the indirect costs of research under DOE grants. The group filed suit Monday, April 14, challenging a what it termed a “flagrantly unlawful action” that could “devastate scientific research at America’s universities.”
By Wednesday, the U.S. District Court judge hearing the case issued a temporary restraining order effective nationwide, preventing the DOE from implementing the policy or terminating any existing grants.
Man Gyun Na
Nuclear Technology | Volume 128 | Number 3 | December 1999 | Pages 327-340
Technical Paper | Reactor Operations and Control | doi.org/10.13182/NT99-A3035
Articles are hosted by Taylor and Francis Online.
A neuro-fuzzy method is used to estimate the departure from nucleate boiling (DNB) protection limit using the measured average temperature and pressure of a reactor core. The neuro-fuzzy system parameters are optimized by two learning methods. A genetic algorithm is used to optimize the antecedent parameters of the neuro-fuzzy inference system, and a least-squares algorithm is used to solve the consequent parameters. Two neuro-fuzzy inference systems are used according to the pressure and temperature regions. The proposed method, which is applied to the Yonggwang 3 and 4 nuclear power plants, has a 6.09% larger thermal margin than the conventional Westinghouse OTT DNB protection logic. This simple algorithm can provide good information for nuclear power plant operation and diagnosis by estimating the DNB protection limit each time step.
