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.
Division Spotlight
Nuclear Installations Safety
Devoted specifically to the safety of nuclear installations and the health and safety of the public, this division seeks a better understanding of the role of safety in the design, construction and operation of nuclear installation facilities. The division also promotes engineering and scientific technology advancement associated with the safety of such facilities.
Meeting Spotlight
International Conference on Mathematics and Computational Methods Applied to Nuclear Science and Engineering (M&C 2025)
April 27–30, 2025
Denver, CO|The Westin Denver Downtown
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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Apr 2025
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Nuclear Science and Engineering
May 2025
Nuclear Technology
Fusion Science and Technology
Latest News
TerraPower begins U.K. regulatory approval process
Seattle-based TerraPower signaled its interest this week in building its Natrium small modular reactor in the United Kingdom, the company announced.
TerraPower sent a letter to the U.K.’s Department for Energy Security and Net Zero, formally establishing its intention to enter the U.K. generic design assessment (GDA) process. This is TerraPower’s first step in deployment of its Natrium technology—a 345-MW sodium fast reactor coupled with a molten salt energy storage unit—on the international stage.
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.
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