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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
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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|Reactor Design and Analysis
Tuesday, April 23, 2024|1:30–3:15PM PDT|Franciscan A
Session Chair:
William Wieselquist
Alternate Chair:
David Chandler (ORNL)
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A Preliminary Neutronic Analysis of the ALFRED Reactor Core
1:30–1:50PM PDT
V. Vitali (newcleo), M. Falabino (newcleo), D. Tomatis (newcleo), M. Carta (newcleo)
Paper
Reactor Physics Modelling Challenges of the FLEX Reactor
1:50–2:10PM PDT
Simon Boddington (MoltexFLEX), Tom Taylor (MoltexFLEX), Peter Haigh (MoltexFLEX), Eduardo Cuoc (MoltexFLEX), Chris Hankinson (MoltexFLEX), Luke Godfrey (MoltexFLEX)
Updates on the OECD NEA Working Party on Scientific Issues and Uncertainty Analysis of Reactor Systems (WPRS)
2:10–2:30PM PDT
Oliver Buss (OECD NEA), Hakim Ferroukhi (Paul Scherrer Institute), Kostadin Ivanov (NCSU)
Initial Demonstration of New Griffin Capability for Simulating the Running-In Phase of Pebble-Bed Reactors with Multiphysics
2:30–2:50PM PDT
Joshua Hanophy (INL), Javier Ortensi (INL), Paolo Balestra (INL), Yaqi Wang (INL)
Calculation and Analysis of Physical Characteristics of Gaseous Fuel Reactor
2:50–3:10PM PDT
Dacai Zhang (Tsinghua Univ.), Wenxiang Fang (Tsinghua Univ.), Zhechuan Tan (Tsinghua Univ.), Minzhi Xiong (Tsinghua Univ.), Yu Ganglin (Tsinghua Univ.)
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