United Kingdom · Aldermaston · 51.383, -1.150

HERALD

HERALD, a research reactor (pool) in Aldermaston, United Kingdom, with 5 MW of thermal power, operated by Atomic Weapons Research Establishment. Decommissioned, first critical in 1960.

It was one of the 46 research reactors the United Kingdom has had; 1 remains in operation today. It went critical 13 years after the first research reactor in the United Kingdom, GLEEP (1947). 48 pool-type reactors remain in operation today across 28 countries.

Country

United Kingdom

City

Aldermaston

Type

Pool

Thermal power

5 MW

Operator

Atomic Weapons Research Establishment

Status

Decommissioned

First criticality

1960

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