ES
Russia Russia · Nizhny Novgorod · 56.327, 44.008

1120

1120, a research reactor (critical assembly) in Nizhny Novgorod, Russia, operated by Experimental Design Bureau of Machine Building (OKBM). Decommissioned, first critical in 1975.

It was one of the 123 research reactors Russia has had; 57 remain in operation today. It went critical 29 years after the first research reactor in Russia, F-1 (1946). 44 critical assemblies remain in operation today across 12 countries.

Country
Russia
City
Nizhny Novgorod
Type
Critical assembly
Thermal power
critical
Operator
Experimental Design Bureau of Machine Building (OKBM)
Status
Decommissioned
First criticality
1975

Data: IAEA RRDB · updated on Sep 3, 2026

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