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2026 ANS Winter Conference & Expo
November 15–18, 2026
Phoenix, AZ|Arizona Grand Resort & Spa
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LLNL, Ampera partner to develop thorium-based TRISO fuel
Lawrence Livermore National Laboratory has formed a strategic partnership with Ampera to develop the company’s nuclear fuel concept through a project named THUNDER, for Thorium Unimodal Droplet Ejection for Reactors.
The focus of THUNDER is fabricating TRISO made with kernels of thorium rather than the usual uranium. LLNL and Ampera will evaluate and optimize liquid metal–jetting technology to produce highly uniform, spherical kernels of thorium-232 for later processing into TRISO fuel.
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.
Sven Bader
ORANO
Benjamin Cipiti
Sandia National Laboratories
Jared Johnson
ORNL