Russia · St. Petersburg · 59.938, 30.309 (approximate location)

R-1

R-1, a research reactor (subcritical assembly) in St. Petersburg, Russia, operated by Krylov Shipbuilding Research Institute. Shut down, first critical in 1991.

It was one of the 123 research reactors Russia has had; 57 remain in operation today. It went critical 45 years after the first research reactor in Russia, F-1 (1946). 20 subcritical assemblies remain in operation today across 13 countries.

Country

Russia

City

St. Petersburg

Type

Subcritical assembly

Thermal power

critical

Operator

Krylov Shipbuilding Research Institute

Status

Shut down

First criticality

1991

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