ANS is committed to advancing, fostering, and promoting the development and application of nuclear sciences and technologies to benefit society.
Explore the many uses for nuclear science and its impact on energy, the environment, healthcare, food, and more.
Explore membership for yourself or for your organization.
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!
Latest Magazine Issues
Oct 2025
Jul 2025
Latest Journal Issues
Nuclear Science and Engineering
November 2025
Nuclear Technology
October 2025
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.
Technical Session|Panel|Sponsored by FCWMD
Wednesday, November 15, 2023|10:00–11:45AM EST|Fairchild East/West
Session Chair:
Jared Johnson (ORNL)
Alternate Chair:
Benjamin B. Cipiti
Session Organizer:
Sven O. Bader (Orano Federal Services)
With the majority of the currently proposed advanced reactor concepts requiring the use of HALEU (i.e., uranium enriched to greater than 10% but less than 20% U-235) fuel, the NRC's regulation on the Physical Protection of Plants and Materials (10 CFR 73) requires additional protections for HALEU (sometimes referred to as a Category II material) compared to the currently used LEU fuels (Category III material). This panel will discuss the potential impacts on the back end of the fuel cycle (e.g., interim storage, transportation, and recycling) as a result of using this Category II material over Category III material.
To join the conversation, you must be logged in and registered for the meeting.
Register NowLog In
