United Kingdom · Seascale · 54.395, -3.483

HERO

HERO, a research reactor (graphite) in Seascale, United Kingdom, with 3 kW of thermal power, operated by Windscale Works. Decommissioned, first critical in 1962.

It was one of the 46 research reactors the United Kingdom has had; 1 remains in operation today. It went critical 15 years after the first research reactor in the United Kingdom, GLEEP (1947). 4 graphite-moderated research reactors remain in operation today across 3 countries.

Country

United Kingdom

City

Seascale

Type

Graphite

Thermal power

3 kW

Operator

Windscale Works

Status

Decommissioned

First criticality

1962

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