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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|Panel|Sponsored by RPD
Monday, November 13, 2023|1:00–2:45PM EST|Lincoln West
Session Chair:
John Jackson (INL)
Alternate Chair:
Abdalla Abou-Jaoude (INL)
Session Organizer:
As MARVEL completes its 90% final design, this panel session will provide a deep dive into the intricacies of the reactor demonstration. This session will specifically revolve around the final system configuration, fuel performance evaluation, validation of thermal hydraulics using an experimental facility, instrumentation and controls, and the detailed construction for the reactor. The fuel performance presentation will delve into some of the characteristics of the MARVEL TRIGA-based fuel and its associated behavior under various operational scenarios, within the basis of current fuel qualification. The results from the PCAT experimental test facilities that is intended to validate the natural circulation behavior within MARVEL will be discussed. This will be followed by an overview of the MARVEL instrumentation and controls, including the core reactivity control systems. Lastly, the detailed planned construction and assembly blueprint for the reactor within the TREAT facility will be presented.
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