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Idaho National Lab describes TRISO progress and new testbeds to speed demonstrations

University of Utah, Price College of Engineering panel on advanced nuclear · June 20, 2025
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Summary

INL leaders said the lab operates multiple reactors used to qualify fuels and that DOE-funded testbeds and a revitalized dome will host microreactor testing to reduce developers' site costs and speed demonstrations.

Jess Jean, associate laboratory director for nuclear science and technology at Idaho National Laboratory, outlined INL's role in fuel development, materials research and testbed operations. "We operate we have 4 react nuke reactors operating on our site," Jean said, noting those reactors are used to qualify fuels and support advanced-reactor demonstrations.

Jean described progress on TRISO (coated-particle) fuel and said INL’s research supported topical reports used by the NRC for licensing reviews. She also described the National Reactor Innovation Center’s testbeds and a revitalized dome being set up for microreactor testing, which developers can use to validate designs without investing in a separate site.