Russia Russia · Sarov · 54.933, 43.317

BR-1M

BR-1M, a research reactor (fast) in Sarov, Russia, with 5 kW of thermal power, operated by All Russian Research Inst. of Exp. Physics VNIIEF. Operating, first critical in 1979.

It is one of the 57 research reactors operating in Russia. It went critical 33 years after the first research reactor in Russia, F-1 (1946). It is one of 15 fast research reactors operating worldwide, spread across 6 countries. It has been 47 years since its first criticality.

Country
Russia
City
Sarov
Type
Fast
Thermal power
5 kW
Operator
All Russian Research Inst. of Exp. Physics VNIIEF
Status
Operating
First criticality
1979

Data: IAEA RRDB · updated on Sep 3, 2026

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