ES
United Kingdom United Kingdom · Aldermaston · 51.383, -1.150

VERA Nuclear Assembly

VERA Nuclear Assembly, a research reactor (critical assembly) in Aldermaston, United Kingdom, with 100 W of thermal power, operated by Atomic Weapons Research Establishment. Decommissioned, first critical in 1961.

It was one of the 46 research reactors the United Kingdom has had; 1 remains in operation today. It went critical 14 years after the first research reactor in the United Kingdom, GLEEP (1947). 44 critical assemblies remain in operation today across 12 countries.

Country
United Kingdom
City
Aldermaston
Type
Critical assembly
Thermal power
100 W
Operator
Atomic Weapons Research Establishment
Status
Decommissioned
First criticality
1961

Data: IAEA RRDB · updated on Sep 3, 2026

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