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NTU

NTU, a research reactor (subcritical assembly) in Athens, Greece, with 100 W of thermal power, operated by Laboratory of Nuclear Eng. NTU-Athens. Shut down, first critical in 1970.

It was one of the 3 research reactors Greece has had; 2 remain in operation today. It went critical 9 years after the first research reactor in Greece, Demokritos (GRR-1) (1961). 20 subcritical assemblies remain in operation today across 13 countries.

Country
Greece
City
Athens
Type
Subcritical assembly
Thermal power
100 W
Operator
Laboratory of Nuclear Eng. NTU-Athens
Status
Shut down
First criticality
1970

Data: IAEA RRDB · updated on Sep 3, 2026

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