Wednesday, August 26, 2026
Westinghouse reaches criticality milestone for eVinci reactor
Westinghouse completed zero-power criticality testing for its eVinci microreactor on August 24, working with Los Alamos and Idaho National Laboratories at the National Criticality Experiments Research Center on the Nevada National Security Site. The test validated the reactor's physics models and core design assumptions rather than generating heat or power, marking a design-basis milestone for the heat-pipe-cooled microreactor as Westinghouse targets US commercial deployment by 2027 and a first unit for Saskatchewan Research Council by 2029.
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