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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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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|1:30–3:15PM PDT|Franciscan C
Session Chair:
Go Chiba
Session Organizer:
Alternate Chair:
Joshua Hykes (Studsvik Scandpower)
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A Comparative Study of Efficient Sampling Techniques for Uncertainty Quantification due to Cross-Section Covariance Data
1:30–1:50PM PDT
Tatsuya Fujita (Japan Atomic Energy Agency)
Paper
Nuclear Data Uncertainty Methods in CASMO5 Using ENDF/B-VIII Covariances
1:50–2:10PM PDT
Joshua Hykes (Studsvik Scandpower), Charles Wemple (Studsvik Scandpower), Rodolfo Ferrer (Studsvik Scandpower)
Computation of Sensitivity in Monte-Carlo Codes: Investigation of Convergence for Reactor Cores with High Dominance Ratio
2:10–2:30PM PDT
M. Rababah (LPSC), A. Bidaud (LPSC)
Uncertainty Analysis of the Reaction Rates in Ringhals
2:30–2:50PM PDT
Jacob Persson (Vattenfall Nuclear Fuel)
Uncertainty Quantification in Fluoride-Based Molten Salt Reactors with Open Sourced Tools
2:50–3:10PM PDT
Zsolt Elter (Uppsala Univ.), Augusto Hernandez Solis (SCK CEN), Mario Ponce Tovar (Seaborg Technologies)
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