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
Nuclear Installations Safety
Devoted specifically to the safety of nuclear installations and the health and safety of the public, this division seeks a better understanding of the role of safety in the design, construction and operation of nuclear installation facilities. The division also promotes engineering and scientific technology advancement associated with the safety of such facilities.
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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Apr 2025
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Nuclear Science and Engineering
May 2025
Nuclear Technology
Fusion Science and Technology
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.
Technical Session
Tuesday, May 10, 2022|1:30–3:30PM EDT|Calypso
Session Chair:
John Scott (NASA)
Session Organizer:
Alternate Chair:
Leonard Dudzinski (NASA)
Four presentations from U.S. and international contributors, discussing reactor, thruster, and power conversion concepts.
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High Power Electric Propulsion Thruster Trades for a Nuclear Electric Propulsion-Based Human Mars Mission
Timothy Kokan (Aerojet Rocketdyne), C. Russell Joyner II (Aerojet Rocketdyne), Daniel J.H. Levack (Aerojet Rocketdyne), Dennis E. Morris (Aerojet Rocketdyne), Brian J. Muzek (Aerojet Rocketdyne), Rodney W. Noble (Aerojet Rocketdyne), Samuel Rapoport (Aerojet Rocketdyne), Christopher B. Reynolds (Aerojet Rocketdyne), Jakob Trescott (Aerojet Rocketdyne)
Paper
Conceptual Design of a Rotary Space Reactor with Naturally Circulating Water Driven by Centrifugal Force
Keigo Hasegawa (Tokyo City Univ.), Kazumasa Taneda (Tokyo City Univ.), Rikio Watanabe (Tokyo City Univ.), Naoyuki Takaki (Tokyo City Univ.)
Nuclear Electric Propulsion Brayton Power Conversion Working Fluid Considerations
Rodger Dyson (NASA Glenn Research Center), D. V. Rao (LANL), Matthew Duchek (Analytical Mechanics Assoc.), Christopher Harnack (Analytical Mechanics Assoc.), Robert Scheidegger (NASA Glenn Research Center), Lee Mason (NASA), Al Juhasz (NASA Glenn Research Center), Luis Rodriguez (NASA Glenn Research Center), Ronald Leibach (NASA Glenn Research Center), Steven Geng (NASA Glenn Research Center), Daniel Goodell (NASA Glenn Research Center)
Genetic Optimization of a Conversion System Based on a Rankine Cycle and its Heat Sink for a 1 MWe Space Nuclear Reactor
Carlos-Jesús Romero-Casado (CEA), Nicolas Rey-Tornero (CEA), Guillaume Campioni (CEA), Yannick Gorsse (CEA), Daniel Heuer (Centre National de la Recherche Scientifique), Nicolas Jonqueres (CEA), Sébastien Le Martelot (CNES)
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