ES
Canada Canada · Pinawa, MB · 50.149, -95.881 (approximate location)

WR-1

WR-1, a research reactor (heavy water) in Pinawa, MB, Canada, with 60 MW of thermal power, operated by Whiteshell Laboratories, AECL. Shut down, first critical in 1965.

It was one of the 18 research reactors Canada has had; 4 remain in operation today. It went critical 20 years after the first research reactor in Canada, ZEEP (1945). 10 heavy-water research reactors remain in operation today across 7 countries.

Country
Canada
City
Pinawa, MB
Type
Heavy water
Thermal power
60 MW
Operator
Whiteshell Laboratories, AECL
Status
Shut down
First criticality
1965

Data: IAEA RRDB · updated on Sep 3, 2026

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