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Russia Russia · Gatchina · 59.583, 30.133

WWR-M

WWR-M, a research reactor (tank) in Gatchina, Russia, with 18 MW of thermal power, operated by Petersburg Nuclear Physics Institute. Temporary shutdown, first critical in 1959.

By thermal power it ranks sixth among the 57 research reactors operating in Russia. It went critical 13 years after the first research reactor in Russia, F-1 (1946). It is one of 36 tank-type reactors operating worldwide, spread across 23 countries. Its declared uses include isotope production, neutron scattering, silicon doping and transmutation.

Country
Russia
City
Gatchina
Type
Tank
Thermal power
18 MW
Operator
Petersburg Nuclear Physics Institute
Status
Temporary shutdown
First criticality
1959
Purpose
Isotope production, neutron scattering, silicon doping, transmutation, gemstone irradiation, training, activation analysis, geochronology, materials testing

Data: IAEA RRDB · updated on Sep 3, 2026

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