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Russia Russia · Obninsk · 55.093, 36.611

BFS-2

BFS-2, a research reactor (critical assembly) in Obninsk, Russia, with 1 kW of thermal power, operated by Institute of Physics and Power Engineering. Operating, first critical in 1969.

It is one of the 57 research reactors operating in Russia. It went critical 23 years after the first research reactor in Russia, F-1 (1946). It is one of 44 critical assemblies operating worldwide, spread across 12 countries. It has been 57 years since its first criticality.

Country
Russia
City
Obninsk
Type
Critical assembly
Thermal power
1 kW
Operator
Institute of Physics and Power Engineering
Status
Operating
First criticality
1969

Data: IAEA RRDB · updated on Sep 3, 2026

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