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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.
Yuichiro Yamashita, Takehiko Yokomine, Shinji Ebara, Akihiko Shimizu
Fusion Science and Technology | Volume 46 | Number 4 | December 2004 | Pages 541-547
Technical Paper | doi.org/10.13182/FST04-A589
Articles are hosted by Taylor and Francis Online.
The purpose of the Experimental Vacuum Ingress Test Apparatus (EVITA) program is to obtain useful data for safety analysis of serious potential accidents for ITER. The numerical predictions for EVITA have been done by using the MELCOR, PAX, and CONSEN codes under conditions in which temperature is always kept above 273 K. In the EVITA program, high-temperature and high-pressure steam is injected into the vacuum vessel housing the cryogenic plate. Consequently, the phenomena that occur in the vicinity of the impingement surface are expected to be exceedingly transient and complex. The subject of this study is the development of a valid numerical code for the EVITA program. A key point of this study is to describe all of the phenomena, for example, shock-wave propagation and phase change under low pressure. In this study, the C-CUP method is employed, which describes these phenomena. To investigate phenomena with EVITA, numerical analysis had been done with several conditions concerned with input power. As a result, we succeeded in obtaining a fundamental code for the EVITA program as well as interesting views of EVITA.
