United Kingdom · Aldermaston · 51.383, -1.150

HORACE

HORACE, a research reactor (critical assembly) in Aldermaston, United Kingdom, with 10 W of thermal power, operated by Atomic Weapons Research Establishment. Decommissioned, first critical in 1958.

It was one of the 46 research reactors the United Kingdom has had; 1 remains in operation today. It went critical 11 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

10 W

Operator

Atomic Weapons Research Establishment

Status

Decommissioned

First criticality

1958

See also: every research reactor in United Kingdom · How research reactors work