Isis
Isis, a research reactor (pool) in Gif-sur-Yvette, France, with 700 kW of thermal power, operated by CEA Saclay. Shut down, first critical in 1966.
It was one of the 38 research reactors France has had; 2 remain in operation today. It went critical 18 years after the first research reactor in France, ZOE (EL-1) (1948). 48 pool-type reactors remain in operation today across 28 countries. Its declared uses include teaching and training.
- Country
- France
- City
- Gif-sur-Yvette
- Type
- Pool
- Thermal power
- 700 kW
- Operator
- CEA Saclay
- Status
- Shut down
- First criticality
- 1966
- Purpose
- Teaching, training
See also: every research reactor in France · How research reactors work
Data: IAEA RRDB · updated on Sep 3, 2026