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Russia Russia · Obninsk · 55.093, 36.611

TOPAZ

TOPAZ, a research reactor (other) in Obninsk, Russia, with 150 kW of thermal power, operated by Institute of Physics and Power Engineering. Decommissioned, first critical in 1966.

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

Country
Russia
City
Obninsk
Type
Other
Thermal power
150 kW
Operator
Institute of Physics and Power Engineering
Status
Decommissioned
First criticality
1966

Data: IAEA RRDB · updated on Sep 3, 2026

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