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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.
Y. Ichimasa, M. Ichimasa, H. Jiang, K. Katsuno, H. Noguchi, S. Yokoyama, H. Amano, M. Atarashi
Fusion Science and Technology | Volume 28 | Number 3 | October 1995 | Pages 877-882
Tritium Safety | Proceedings of the Fifth Topical Meeting on Tritium Technology in Fission, Fusion, and Isotopic Applications Belgirate, Italy May 28-June 3, 1995 | doi.org/10.13182/FST95-A30515
Articles are hosted by Taylor and Francis Online.
The oxidation activity of molecular tritium (HT) in soils and vegetation collected in experimental plots during the 1994 chronic HT release experiment at Chalk River was determined in in vitro laboratory experiments after the release. HT oxidation activity was highest in surface soils in the natural plot, about 3–4 times that in soils in the cultivated plots. HT oxidation activity in weeds and Komatsuna leaves was about 2 and 0.4 % of that in the cultivated soil, respectively. The number of HT-oxidizing bacteria isolated from soils was highest in the surface soil (0–5 cm) in the natural plot. The viable cell numbers in surface soils in the cultivated and natural plots were almost the same. The total occurrence rates of HT-oxidizing bacteria in the surface soils were 22 % in the natural plot, and 7.5 % in the cultivated plot. The occurrence rates of HT-oxidizing airborne bacteria during the release on two culture media were 4.2 and 1.9 %.
