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Poland Poland · Otwock · 52.123, 21.344

EWA

EWA, a research reactor (tank) in Otwock, Poland, with 10 MW of thermal power, operated by Institute of Atomic Energy POLATOM. Shut down, first critical in 1958.

It was one of the 6 research reactors Poland has had; 1 remains in operation today. It was the first research reactor in Poland to go critical. 36 tank-type reactors remain in operation today across 23 countries.

Country
Poland
City
Otwock
Type
Tank
Thermal power
10 MW
Operator
Institute of Atomic Energy POLATOM
Status
Shut down
First criticality
1958

Data: IAEA RRDB · updated on Sep 3, 2026

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