United Kingdom · Derby · 52.925, -1.478 (approximate location)

Neptune

Neptune, a research reactor (pool) in Derby, United Kingdom, with 300 W of thermal power, operated by Rolls-Royce Marine Power Operations Ltd. Operating, first critical in 1963.

It is the only research reactor operating in the United Kingdom today; the country has shut down 45 others. It went critical 16 years after the first research reactor in the United Kingdom, GLEEP (1947). It is one of 48 pool-type reactors operating worldwide, spread across 28 countries. It has been 63 years since its first criticality.

Country

United Kingdom

City

Derby

Type

Pool

Thermal power

300 W

Operator

Rolls-Royce Marine Power Operations Ltd

Status

Operating

First criticality

1963

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