The Sodium Reactor Experiment

February 23, 2024, 3:01PMNuclear NewsJeremy Hampshire
The SRE nuclear facility in 1958. (Photo: DOE)

In February 1957, construction was completed on the Sodium Reactor Experiment (SRE), a sodium-cooled, graphite-moderated reactor with an output of 20 MWt. The design of theSRE had begun three years earlier in 1954, and construction started in April 1955. On April 25, 1957, the reactor reached criticality, and the SRE operated until February 1964.

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