US lab validates nuclear microreactor with successful zero-power criticality test
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2 min readKey summary
Los Alamos National Laboratory completed proof-of-principle testing of its ZiaCore microreactor at NCERC in Nevada.
The reactor reached zero-power criticality at more than 800 C, confirming the core physics against design predictions.
The test delivered important data for safety analysis, licensing, and future development of low-enriched uranium microreactors.
The results support compact reactor systems aimed at remote, military, and industrial power applications.
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