Spain · Madrid · 40.417, -3.703 (approximate location)

JEN-1 Mod

JEN-1 Mod, a research reactor (pool) in Madrid, Spain, with 3 MW of thermal power, operated by Centro de Investigaciones Energeticas, Med. y Tech. (CIEMAT). Decommissioned, first critical in 1958.

It was one of the 4 research reactors Spain has had; 0 remain in operation today. It was the first research reactor in Spain to go critical. 48 pool-type reactors remain in operation today across 28 countries.

Country

Spain

City

Madrid

Type

Pool

Thermal power

3 MW

Operator

Centro de Investigaciones Energeticas, Med. y Tech. (CIEMAT)

Status

Decommissioned

First criticality

1958

See also: every research reactor in Spain · How research reactors work