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Italy Italy · Bologna · 44.494, 11.343

RB-1

RB-1, a research reactor (critical assembly) in Bologna, Italy, with 20 kW of thermal power, operated by Laboratorio Ingegneria Nucleare. Decommissioned, first critical in 1962.

It was one of the 18 research reactors Italy has had; 5 remain in operation today. It went critical 3 years after the first research reactor in Italy, Avogadro RS-1 (1959). 44 critical assemblies remain in operation today across 12 countries.

Country
Italy
City
Bologna
Type
Critical assembly
Thermal power
20 kW
Operator
Laboratorio Ingegneria Nucleare
Status
Decommissioned
First criticality
1962

Data: IAEA RRDB · updated on Sep 3, 2026

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