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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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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
Argonne’s METL gears up to test more sodium fast reactor components
Argonne National Laboratory has successfully swapped out an aging cold trap in the sodium test loop called METL (Mechanisms Engineering Test Loop), the Department of Energy announced April 23. The upgrade is the first of its kind in the United States in more than 30 years, according to the DOE, and will help test components and operations for the sodium-cooled fast reactors being developed now.
Sergei Molokov, Claude B. Reed
Fusion Science and Technology | Volume 43 | Number 2 | March 2003 | Pages 200-216
Technical Paper | doi.org/10.13182/FST03-A261
Articles are hosted by Taylor and Francis Online.
Liquid metal flow in a straight duct in a fringing magnetic field is considered. The magnetic field is uniform with two different levels upstream and downstream. In the region of a nonuniform magnetic field, the gradient of the field is aligned with the duct axis. The flow is assumed to be inertialess. It is analyzed using an asymptotic flow model at high values of the Hartmann number, Ha. A corresponding study of the flow is used as a starting point by Hua and Walker. The analysis leads to two two-dimensional partial differential equations for the core pressure and the electric potential of the duct wall. These equations are solved numerically using central differences on a transformed grid. It has been confirmed that for the flow in insulating circular ducts, the three-dimensional effects are very significant. For high values of Ha, the three-dimensional pressure drop is equivalent to the extension of the length of the duct with fully developed flow by 10 to 150 diameters. A parametric study of the flow has been performed for different values of the Hartmann number, field gradient, and field levels upstream and downstream. A solution for the benchmark problem has been obtained for Ha = 258 000, which is relevant to inlet/outlet pipes for ARIES. Finally, the effect of the finite length of the magnet in magnetohydrodynamic experiments has been evaluated.
