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Conference Spotlight
2025 ANS Winter Conference & Expo
November 9–12, 2025
Washington, DC|Washington Hilton
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
NEA report calls for more accurate data on SNF heat decay
The OECD Nuclear Energy Agency has issued a report calling for more-detailed information on tracking the decay heat of spent nuclear fuel from light water reactors. According to the NEA, the report highlights the increasing importance of accurate decay heat estimations due to evolving fuel characteristics, including higher initial fuel enrichment, increased burn-up rates, and extended reactor cycle lengths.
The report, Summary of the NEA Assessment on Spent Nuclear Fuel Decay Heat for Light Water Reactors, summarizes the findings of a subgroup of the NEA’s Working Party on Nuclear Criticality Safety (WPNCS), which ran from January 2022 to January 2024.
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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