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France France · Fontenay-aux-Roses · 48.789, 2.289

Nereide

Nereide, a research reactor (pool) in Fontenay-aux-Roses, France, with 500 kW of thermal power, operated by CEA Fontenay-aux-Roses. Decommissioned, first critical in 1960.

It was one of the 38 research reactors France has had; 2 remain in operation today. It went critical 12 years after the first research reactor in France, ZOE (EL-1) (1948). 48 pool-type reactors remain in operation today across 28 countries.

Country
France
City
Fontenay-aux-Roses
Type
Pool
Thermal power
500 kW
Operator
CEA Fontenay-aux-Roses
Status
Decommissioned
First criticality
1960

Data: IAEA RRDB · updated on Sep 3, 2026

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