United States · Cleveland, OH · 41.446, -81.602 (approximate location)

ZPR-I NASA

ZPR-I NASA, a research reactor (homogeneous) in Cleveland, OH, United States, with 100 W of thermal power, operated by Lewis Research Center. Decommissioned, first critical in 1959.

It was one of the 340 research reactors the United States has had; 48 remain in operation today. It went critical 17 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. Its declared uses include nuclear data measurements.

Country

United States

City

Cleveland, OH

Type

Homogeneous

Thermal power

100 W

Operator

Lewis Research Center

Status

Decommissioned

First criticality

1959

Purpose

Nuclear data

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