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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
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October 2025
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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
Wednesday, April 24, 2024|3:30–5:15PM PDT|Continental Ballroom 2
Session Chair:
William Dawn (Studsvik Scandpower)
Alternate Chair:
Charlie Latimer (Rolls Royce)
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Stability Analyses of the Monte Carlo Neutron Transport with Thermal-Hydraulics Feedback
3:30–3:50PM PDT
Kaiwen Li (Tsinghua Univ.), Nan An (Tsinghua Univ.), Hao Luo (Tsinghua Univ.), Jingang Liang (Tsinghua Univ.), Ding She (Tsinghua Univ.), Zhihong Liu (Tsinghua Univ.), Kan Wang (Tsinghua Univ.)
Paper
Coarse Mesh Finite Difference Acceleration for Pebble Tracking Transport in Griffin
3:50–4:10PM PDT
Yaqi Wang (INL), Joshua Hanophy (INL), Namjae Choi (INL)
Improved Decoupled Diffusion Synthetic Acceleration Scheme for Neutral Particle Transport
4:10–4:30PM PDT
Joseph M. Coale (LANL), James S. Warsa (LANL)
Presentation Slides (Visible to Attendees)
Assessing Nonlinear Diffusion Acceleration for Boltzmann Fokker Planck Equation in Slab Geometry
4:30–4:50PM PDT
Japan K. Patel (Univ. Michigan), Barry D. Ganapol (Univ. Arizona), Martha M. Matuszak (Univ. Michigan)
An Adaptive Model for Decay Heat Estimation Using Scram Curves
4:50–5:10PM PDT
Evgeny Nikitin (Helmholtz-Zentrum Dresden-Rossendorf), Emil Fridman (Helmholtz-Zentrum Dresden-Rossendorf), Alexander Ponomarev (Helmholtz-Zentrum Dresden-Rossendorf)
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