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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|Panel|Sponsored by RPD
Tuesday, November 15, 2022|3:15–5:00PM MST|Sonoran 8
Session Chair:
Eva E. Davidson
Session Organizer:
With increased high-performance computing (HPC) capabilities, multiphysics codes for reactor applications can be powerful in simulating complex reactor behavior for advanced reactors and the current fleet of light water reactors. There are many advantages to simulating reactor behavior with multiphysics codes, and they can aid in the design and licensing of reactor concepts. However, there are challenges to coupling codes simulating various physical phenomena including working with different time scales, meshes, units etc. which will be discussed. In addition, the panel discussions will include additional issues such as verification and validation of multiphysics codes and software usability by analysts who are not subject matter experts in all physical phenomena being simulated.
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