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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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Fusion Science and Technology
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.
2024 International Congress on Advances in Nuclear Power Plants (ICAPP)
Technical Session|Thermal Hydraulics Analysis and Testing
Monday, June 17, 2024|3:15–5:00PM PDT|Palm H
Session Chair:
Rui Hu (ANL)
Alternate Chairs:
Mauricio E. Tano (INL)
Palash K. Bhowmik (INL)
Session Organizers:
Hiroyuki Yoshida (Japan Atomic Energy Agency)
Caleb S. Brooks (Univ. Illinois, Urbana-Champaign)
Track Organizers:
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Steam Condensation Scaled Experiment in the Presence of Non-Condensable Gas for Reactor Containment Passive Safety Analysis
3:15–3:35PM PDT
Palash K. Bhowmik (INL), Joshua P. Schlegel (Missouri Univ. Science and Technology), Piyush Sabharwall (INL)
Paper
Comparison of Experimental Data with Thermal-Hydraulic Codes RELAP5-3D and TRACE for Power Transient Flow Boiling Scenarios
3:35–3:55PM PDT
M.A. Moreno (Univ. New Mexico), N.A. Meehan (Univ. Tennessee, Knoxville), C.M. Perfetti (Univ. New Mexico), N.R. Brown (Univ. Tennessee, Knoxville)
Validation of the SAM Code: Development of a Coupled 1D/3D Model of the TALL-3D Natural Circulation Loop
3:55–4:15PM PDT
Eric Cervi (ANL), Ling Zou (ANL), Rui Hu (ANL)
Modeling and Validation of Heat Pipes with Non-Condensable Gases
4:15–4:35PM PDT
M. Tano (INL), P. Sabharwall (INL), K. Sweetland (LANL)
RELAP5 Simulations of the PASI Experiment on Containment Wall Condensation
4:35–4:55PM PDT
Gianmarco Grippo (Univ. Bologna), Massimiliano Polidori (ENEA)
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