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China China · Beijing · 39.907, 116.397 (approximate location)

HWRR-II

HWRR-II, a research reactor (heavy water) in Beijing, China, with 15 MW of thermal power, operated by Department of Reactor Engineering & Technology. Shut down, first critical in 1958.

It was one of the 22 research reactors China has had; 18 remain in operation today. It was the first research reactor in China to go critical. 10 heavy-water research reactors remain in operation today across 7 countries. Its declared uses include isotope production, transmutation, activation analysis and nuclear data measurements.

Country
China
City
Beijing
Type
Heavy water
Thermal power
15 MW
Operator
Department of Reactor Engineering & Technology
Status
Shut down
First criticality
1958
Purpose
Isotope production, transmutation, activation analysis, nuclear data, materials testing

Data: IAEA RRDB · updated on Sep 3, 2026

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