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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|Reactor Design and Analysis
Tuesday, April 23, 2024|10:15AM–12:00PM PDT|Franciscan B
Session Chair:
Ugur Mertyurek (ORNL)
Alternate Chair:
Eva E. Davidson
Session Organizer:
Brendan Kochunas (Univ. Michigan)
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Towards 2D Reference Deterministic Calculations in Support of Industrial Model Verification and Advanced Reflector Modeling Setup
10:15–10:35AM PDT
F. Inzirillo (Politecnico di Milano), A. Brighenti (Framatome), A. Cammi (Politecnico di Milano), L. Graziano (Framatome), A. Hebert (Polytechnique Montréal), G. Marleau (Polytechnique Montréal), S. Santandrea (CEA), B. Vezzoni (Framatome)
Paper
New Thermal and Leakage Synthetic Algorithms Applied to Best Estimate Schemes in Lattice Calculations
10:35–10:55AM PDT
A. Brighenti (Framatome), S. Santandrea (CEA), L. Graziano (Framatome), B. Vezzoni (Framatome)
Enhancing PWR Monte Carlo Simulations with GREAPMC: A GPU-Accelerated Approach
10:55–11:15AM PDT
Muhammad Rizwan Ali (Ulsan Nat'l Institute Science and Technology), Murat Serdar Aygul (Ulsan Nat'l Institute Science and Technology), Deokjung Lee (Ulsan Nat'l Institute Science and Technology)
Enrichment Interpolation for High-Assay Low-Enriched Uranium Fuel Macroscopic Cross Section for Polaris/PARCS
11:15–11:35AM PDT
Junsu Kang (Univ. Michigan), Andrew M. Ward (Univ. Michigan), Ugur Mertyurek (ORNL), Thomas J. Downar (Univ. Michigan)
Core Physics Characteristics of Extended Enrichment and Higher Burnup Boiling Water Reactor Fuel
11:35–11:55AM PDT
Ugur Mertyurek (ORNL), Riley Cumberland (ORNL), William A. Wieselquist (ORNL)
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