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United Kingdom United Kingdom · Thurso · 58.580, -3.744

Dounreay Fast Reactor

Dounreay Fast Reactor, a research reactor (fast) in Thurso, United Kingdom, with 65 MW of thermal power, operated by Dounreay Nuclear Power Development Establishment. Shut down, first critical in 1959.

It was one of the 46 research reactors the United Kingdom has had; 1 remains in operation today. It went critical 12 years after the first research reactor in the United Kingdom, GLEEP (1947). 15 fast research reactors remain in operation today across 6 countries.

Country
United Kingdom
City
Thurso
Type
Fast
Thermal power
65 MW
Operator
Dounreay Nuclear Power Development Establishment
Status
Shut down
First criticality
1959

Data: IAEA RRDB · updated on Sep 3, 2026

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