Japan · Tokai-Mura · 36.473, 140.566 (approximate location)

JRR-3

JRR-3, a research reactor (heavy water) in Tokai-Mura, Japan, with 10 MW of thermal power, operated by Tokai Research Establisment. Decommissioned, first critical in 1962.

It was one of the 27 research reactors Japan has had; 9 remain in operation today. It went critical 5 years after the first research reactor in Japan, JRR-1 (1957). 10 heavy-water research reactors remain in operation today across 7 countries.

Country

Japan

City

Tokai-Mura

Type

Heavy water

Thermal power

10 MW

Operator

Tokai Research Establisment

Status

Decommissioned

First criticality

1962

See also: every research reactor in Japan · How research reactors work