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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|Sponsored by THD
Wednesday, November 16, 2022|10:00–11:45AM MST|Sonoran 3
Session Chair:
Shanbin Shi
Session Organizer:
Alternate Chair:
Subash Sharma
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Preliminary Analysis of Departure from Nucleate Boiling Ratio Considering Core Flow Asymmetry Using MARS-KS
10:00–10:20AM MST
Seunghwan Oh (KAIST), Doh Hyeon Kim (KAIST), Il Suk Lee (Korea Institute of Nuclear Safety), Jeong Ik Lee (KAIST)
Paper
Modeling of a Large Scale RCCS Operating at Two-Phase Transient Conditions with RELAP5-3D
10:20–10:40AM MST
Zhiee Jhia Ooi (ANL), Qiuping Lv (ANL), Rui Hu (ANL), Darius Lisowski (ANL)
Evaluation of Computational Fluid Dynamic Models for Bubbly Two-Phase Flows in Inclined Upward Orientations
10:40–11:00AM MST
Drew Ryan (Purdue), Seungjin Kim (Purdue)
Fuel Dispersal During Loss of Coolant Accidents: Computational Model Development and Validation
11:00–11:20AM MST
Avinash Moharana (Rensselaer Polytechnic Institute), Trevor Howard (Oregon State), Wade Marcum (Oregon State), Benjamin Spencer (INL), Shanbin Shi (Rensselaer Polytechnic Institute)
Flow Instability Models for the Thermal-Hydraulic Core Design of Research Reactors
11:20–11:40AM MST
Basar Ozar (ANL), Jeremy R. Licht (ANL), Aurelien Bergeron (ANL), Francesc Puig (ANL)
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