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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
Tuesday, April 23, 2024|1:30–3:15PM PDT|Franciscan D
Session Chair:
Scott P. Palmtag
Session Organizer:
This session contains 4 papers related to current activities for analyzing OECD/NEA TVA WB1 Benchmark. The session will begin with a 20 minute introduction to the benchmark, and the first paper will be presented at 1:50pm PDT.
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VERA Solution to the Watts Bar Benchmark Problem
1:50–2:10PM PDT
Scott Palmtag (NCSU), Khaldoon Al-Dawood (NCSU), Andrew Godfrey (Veracity Nuclear)
Paper
NEA/OECD TVA Watts Bar Unit 1 Multi-Physics Multi-Cycle Depletion Benchmark with CASMO5 and SIMULATE5
2:10–2:30PM PDT
Emiliya L. Georgieva (Studsvik Scandpower), Tamer Bahadir (Studsvik Scandpower)
Presentation Slides (Visible to Attendees)
Attachment — BIO
Variability Due to Nuclear Data Applied to the Watts Bar Unit 1 Benchmark with CASMO5/SIMULATE5 Code Sequence
2:30–2:50PM PDT
S. Bonthoux (IRSN), J. Taforeau (IRSN)
Presented by Franck Bernard (IRSN)
First Steps of the ANTARES Validation with TVA Watts Bar Unit 1 Cycle 1 Benchmark
2:50–3:10PM PDT
F. Bernard (IRSN), S. Bonthoux (IRSN), M. Forestier (IRSN), G. Girault (IRSN), A. Sargeni (IRSN), J. Taforeau (IRSN)
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