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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
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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
First astatine-labeled compound shipped in the U.S.
The Department of Energy’s National Isotope Development Center (NIDC) on March 31 announced the successful long-distance shipment in the United States of a biologically active compound labeled with the medical radioisotope astatine-211 (At-211). Because previous shipments have included only the “bare” isotope, the NIDC has described the development as “unleashing medical innovation.”
S. Mostafa Ghiaasiaan
Nuclear Technology | Volume 81 | Number 1 | April 1988 | Pages 28-38
Technical Paper | Fission Reactor | doi.org/10.13182/NT88-A34076
Articles are hosted by Taylor and Francis Online.
A model was developed to simulate thermal-hy-draulic phenomena in the downcomer and lower plenum of a pressurized water reactor during reflooding. The system dynamics were formulated in terms of a set of time-dependent ordinary differential equations that were integrated numerically. A model was developed to simulate the oscillatory flow in the downcomer-lower plenum-core system. A numerical procedure was devised for solving the governing global momentum equation. This procedure is shown to be numerically stable and computationally efficient. The developed model for downcomer and lower plenum was coupled to the core thermal-hydraulic model, and predictions were made for FLECHT-SET experimental data. The results compared well with the experiment.
