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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|Sponsored by NCSD
Monday, November 18, 2024|1:00–2:45PM EST|Fantail
Session Chair:
Michael Cartwright (Y-12)
Alternate Chair:
Benjamin Martin
Session Organizer:
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Improved Solid Angle Formulas for use in Criticality Hand Calculations
1:00–1:20PM EST
Jeffrey A. Favorite (LANL)
Paper
Bias and Bias Uncertainty for High-Burnup and Extended Enrichment Fuels in Criticality Safety Analyses Validation Studies
1:20–1:40PM EST
A. Lang (ORNL), M.N. Dupont (ORNL), A.M. Shaw (ORNL), W.A. Metwally (ORNL), W.J. Marshall (ORNL), C. Celik (ORNL), V. Karriem (ORNL), L. Reed Fassino (ORNL)
What is a Criticality Safety Officer at Savannah River Site
1:40–2:00PM EST
Tracy E. Stover (Savannah River Nuclear Solutions)
CAAS Detectability and Source Term Considerations
2:00–2:20PM EST
Timothy Jackson (Y-12 National Security Complex)
Standardized Criticality Safety Limits in Decommissioning Support at Los Alamos
2:20–2:40PM EST
Trevor Stewart (LANL)
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