United States · Richland, WA · 46.280, -119.275 (approximate location)

PNNL-CML Critical Mass Lab

PNNL-CML Critical Mass Lab, a research reactor (homogeneous) in Richland, WA, United States, operated by Battelle Memorial Institute. Decommissioned, first critical in 1961.

It was one of the 340 research reactors the United States has had; 48 remain in operation today. It went critical 19 years after the first research reactor in the United States, CP-1, Chicago Pile 1 (1942). 15 homogeneous reactors remain in operation today across 6 countries.

Country

United States

City

Richland, WA

Type

Homogeneous

Thermal power

critical

Operator

Battelle Memorial Institute

Status

Decommissioned

First criticality

1961

See also: every research reactor in United States · How research reactors work