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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
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.
Satoshi Fukada, Shigeki Ono, Shigenori Suemori
Fusion Science and Technology | Volume 50 | Number 1 | July 2006 | Pages 99-106
Technical Paper | doi.org/10.13182/FST06-A1225
Articles are hosted by Taylor and Francis Online.
The overall mass-transfer process of methane decomposition on Ni surfaces and hydrogen permeation through a Ni tube was experimentally investigated to design a catalytic-permeable Ni tube reactor. This is a basic study of an impurity detritiation system to decompose tritiated methane and continuously recover tritium in a gas mixture exhausted from fusion plasma. The mass-transfer process was comparatively studied under the two conditions of an open Ni tube without any packing and a Ni tube packed with 200-240 mesh Ni particles. Results were discussed in terms of a CH4 decomposition ratio decomp and a H2 permeation ratio perm. The decomp values depended on temperature and were almost independent of the flow rate. The decomp value was correlated to the first-order reaction-rate constant. On the contrary, the perm values were in reverse proportion to the flow rate and were almost independent of temperature. The perm value was related to diffusion through a H2 concentration boundary layer formed in the vicinity of the Ni tube wall. The degradation of catalytic performance due to carbon deposition on Ni was discussed based on our experiments.