United States · Oak Ridge, TN · 35.930, -84.310

ORR, ORNL Research Reactor

ORR, ORNL Research Reactor, a research reactor (tank) in Oak Ridge, TN, United States, with 30 MW of thermal power, operated by Martin Marietta Energy System. Shut down, first critical in 1958.

It was one of the 340 research reactors the United States has had; 48 remain in operation today. It went critical 16 years after the first research reactor in the United States, CP-1, Chicago Pile 1 (1942). 36 tank-type reactors remain in operation today across 23 countries. Its declared uses include research, development and experiments.

Country

United States

City

Oak Ridge, TN

Type

Tank

Thermal power

30 MW

Operator

Martin Marietta Energy System

Status

Shut down

First criticality

1958

Purpose

Research, development, and experiments

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