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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
TerraPower begins U.K. regulatory approval process
Seattle-based TerraPower signaled its interest this week in building its Natrium small modular reactor in the United Kingdom, the company announced.
TerraPower sent a letter to the U.K.’s Department for Energy Security and Net Zero, formally establishing its intention to enter the U.K. generic design assessment (GDA) process. This is TerraPower’s first step in deployment of its Natrium technology—a 345-MW sodium fast reactor coupled with a molten salt energy storage unit—on the international stage.
Katsuro Takahashi, Yoshiaki Himeno, Nobutomo Takahashi, June Takahashi, Tatsuro Iguchi
Nuclear Technology | Volume 54 | Number 3 | September 1981 | Pages 278-285
Technical Paper | Material | doi.org/10.13182/NT81-A32772
Articles are hosted by Taylor and Francis Online.
Recent intensive development tests of components for liquid-metal fast breeder reactors by use of sodium test loops require a reliable and easy method to solve problems associated with cold traps plugged by a large amount of impurities. Although the functioning of the cold traps is fundamental for controlling of sodium purity in such loops, problems sometimes occur because of plugging with sodium impurities. To establish a method to remove trapped impurities in the cold trap and thus to recover its trapping capacity, a regeneration test was made. Trapped impurities in the mesh region of the cold trap were heated with sodium up to 450 to 600°C, then drained into a small tank. The regenerations were made by this method more than 14 times. Chemical analysis of drained sodium in the tank indicated that all of the regenerations made were effective, and drained impurities were collected and concentrated successfully into the tank.
