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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|Methods
Monday, April 22, 2024|3:30–5:15PM PDT|Continental Ballroom 1
Session Chair:
Akio Yamamoto (Nagoya Univ.)
Alternate Chair:
Mathieu Hursin (EPFL)
Session Organizer:
Go Chiba (Hokkaido University)
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Analytical Description of the Neutron Up-Scattering in the Resonance Range
3:30–3:50PM PDT
A. Bengoechea (CEA), G. Noguere (CEA), D. Bernard (CEA), P. Tamagno (CEA)
Paper
Implementation of Unresolved Resonance Region Probability Tables in the GNDS Format
3:50–4:10PM PDT
M.-A. Descalle (LLNL), C.M. Mattoon (LLNL), M.S. McKinley (LLNL), J. Northrop (Oregon State), G. Gert (LLNL), B.R. Beck (LLNL), A. Dreyfuss (LLNL)
Improved Evaluated Nuclear Data in the Resonance Region by Combining Energy Dependent Measurements and Depletion Calculations: Application to Pu-239+n, Pu-240+n and Pu-241+n
4:10–4:30PM PDT
M. Hursin (Ecole Polytechnique Fédérale de Lausanne), D. Rochman (Paul Scherrer Institute), S. van der Marck (Nuclear Research and Consultancy Group)
On the Possible use of Propagation of Resonance Parameters Uncertainties Using the R-Matrix Formalism
4:30–4:50PM PDT
Pierre Sole (IRSN), Vaibhav Jaiswal (IRSN), Cédric Jouanne (CEA)
Predicting (n,2n) Cross Sections Using Machine Learning
4:50–5:10PM PDT
Rohan Gaya (Univ. Cambridge), Valeria Raffuzzi (Univ. Cambridge), Eugene Shwageraus (Univ. Cambridge), Lee Morgan (AWE)
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