Russia · Obninsk · 55.093, 36.611

FG-5

FG-5, a research reactor (critical assembly) in Obninsk, Russia, with 100 W of thermal power, operated by Institute of Physics and Power Engineering. Decommissioned, first critical in 1967.

It was one of the 123 research reactors Russia has had; 57 remain in operation today. It went critical 21 years after the first research reactor in Russia, F-1 (1946). 44 critical assemblies remain in operation today across 12 countries.

Country

Russia

City

Obninsk

Type

Critical assembly

Thermal power

100 W

Operator

Institute of Physics and Power Engineering

Status

Decommissioned

First criticality

1967

See also: every research reactor in Russia · How research reactors work