PANNA
PANNA, a research reactor (critical assembly) in Otwock, Poland, with 100 W of thermal power, operated by Institute of Nuclear Research. Decommissioned, first critical in 1963.
It was one of the 6 research reactors Poland has had; 1 remains in operation today. It went critical 5 years after the first research reactor in Poland, EWA (1958). 44 critical assemblies remain in operation today across 12 countries. Its declared uses include nuclear data measurements and materials testing.
- Country
- Poland
- City
- Otwock
- Type
- Critical assembly
- Thermal power
- 100 W
- Operator
- Institute of Nuclear Research
- Status
- Decommissioned
- First criticality
- 1963
- Purpose
- Nuclear data, materials testing
See also: every research reactor in Poland · How research reactors work
Data: IAEA RRDB · updated on Sep 3, 2026