ANS is committed to advancing, fostering, and promoting the development and application of nuclear sciences and technologies to benefit society.
Explore the many uses for nuclear science and its impact on energy, the environment, healthcare, food, and more.
Division Spotlight
Operations & Power
Members focus on the dissemination of knowledge and information in the area of power reactors with particular application to the production of electric power and process heat. The division sponsors meetings on the coverage of applied nuclear science and engineering as related to power plants, non-power reactors, and other nuclear facilities. It encourages and assists with the dissemination of knowledge pertinent to the safe and efficient operation of nuclear facilities through professional staff development, information exchange, and supporting the generation of viable solutions to current issues.
Meeting Spotlight
Nuclear Energy Conference & Expo (NECX)
September 8–11, 2025
Atlanta, GA|Atlanta Marriott Marquis
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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Nuclear Science and Engineering
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July 2025
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Latest News
DOE extends Centrus’s HALEU production contract by one year
Centrus Energy has secured a contract extension from the Department of Energy to continue—for one year—its ongoing high-assay low-enriched uranium (HALEU) production at the American Centrifuge Plant in Piketon, Ohio, at an annual rate of 900 kilograms of HALEU UF6. That's the same amount of HALEU—900 kg—that the company today announced it has delivered to the DOE, completing Phase II of its contract. According to Centrus, the contract extension, which allows the company to begin Phase III, is valued at about $110 million through June 30, 2026.
Yamato Asakura, Hiroyuki Tsuchiya, Hideo Yusa, Shinpei Matsuda
Nuclear Science and Engineering | Volume 79 | Number 1 | September 1981 | Pages 49-55
Technical Paper | doi.org/10.13182/NSE81-A19041
Articles are hosted by Taylor and Francis Online.
The catalyzed exchange reaction between liquid water and hydrogen gas has been studied using a hydrophobic catalyst of platinum deposited on a porous Teflon support. The reaction was studied with a new method in which a mixture of water mists and hydrogen gas moves downward through the catalyst bed co-currently. This new method was employed to improve the poor contact efficiency between liquid water and hydrogen gas in the hydrophobic catalyst bed. It was found that the reaction rate increased an order of magnitude over the conventional method in which liquid water and hydrogen gas react countercurrently. These experimental results have been analyzed in terms of a rate determining step and compared with previous ones.
