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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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Nuclear Science and Engineering
November 2025
Nuclear Technology
October 2025
Fusion Science and Technology
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
Wednesday, May 11, 2022|1:30–3:30PM EDT|Orchid
Session Chair:
Sebastian Corbisiero (IL)
Session Organizer:
Alternate Chair:
Todd Tofil (NASA)
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Generating Multigroup Macroscopic Cross Sections with MCNP for Griffin Steady-State Neutronics Analysis of the Surface Power Moderated Heat-Pipe Small Reactor
Alexis Maldonado (LANL), Dasari V. Rao (LANL)
Paper
Design Tool Development for Heat Pipe Cooled Space Reactor in KAERI
Sung Nam Lee (KAERI), Sung Hoon Choi (KAERI), Hong-Sik Lim (KAERI), Chan Soo Kim (KAERI)
Multiphysics Suite for Design of Small Reactors
A.J. Fallgren (X-energy), B.T. Rearden (X-energy), John Kennedy (X-energy), Nathan George (X-energy), Dov Rhodes (X-energy), Adam Oler (X-energy), John Pevey (X-energy), Josh Payne (X-energy)
A Deployable 40 kWe Lunar Fission Surface Power Concept
Steven Oleson (NASA Glenn Research Center), Thomas Packard (HX5), Elizabeth Turnbull (NASA Glenn Research Center), Marc Gibson (NASA Glenn Research Center), Dasari Rao (LANL), Christopher Barth (NASA Glenn Research Center), Scott Wilson (NASA Glenn Research Center), Paul Schmitz (Power Computing Solutions), Anthony Colozza (HX5), Brandon Klefman (NASA Glenn Research Center), Lucia Tian (NASA Glenn Research Center), Lee Mason (NASA Glenn Research Center)
Lunar Power Transmission for Fission Surface Power
Christopher Barth (NASA Glenn Research Center), David Pike (NASA Glenn Research Center)
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