Various micro-reactors are under development in the United States based on highly innovative gas-cooled or heat-pipe concepts. Argonne is working with the U.S. Department of Energy, Office of Nuclear Energy (DOE-NE) and industrial partners on micro-reactor design, analyses and modeling. Under the DOE-NE Nuclear Energy Advanced Modeling and Simulation (NEAMS) program, Argonne is working on addressing the challenges and gaps in terms of modeling and simulation for micro-reactors. High-fidelity multi-physics simulations were demonstrated on heat-pipe micro-reactor concepts by coupling neutronics (Griffin), thermo-mechanical (Bison) and heat conduction in the heat-pipe (Sockeye). Argonne is leading the design of the MiFi-DC system with a highly innovative core design optimized for Truck charging stations. Argonne is also investigating a self-regulating micro reactor (MMR) relying on the molten metal fuel expansion for control. Finally, Argonne is supporting the design of the Holos-Quad concept under collaboration with HolosGen LLC with support from an ARPA-E MEITNER award and a GAIN-NE Voucher. This project involves detailed neutronic and shielding analyses performed using high-fidelity codes, and developing innovative material solutions to enhance the core performance.

Reference:

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