South Korea South Korea · Seoul · 37.560, 126.990 (approximate location)

KRR-1

KRR-1, a research reactor (tRIGA) in Seoul, South Korea, with 250 kW of thermal power, operated by Korea Atomic Energy Research Institute (KAERI). Decommissioned, first critical in 1962.

It was one of the 4 research reactors South Korea has had; 2 remain in operation today. It was the first research reactor in South Korea to go critical. 37 TRIGA reactors remain in operation today across 18 countries. It is one of 66 research reactors in 21 countries that General Atomics designed or built.

Country
South Korea
City
Seoul
Type
TRIGA
Thermal power
250 kW
Operator
Korea Atomic Energy Research Institute (KAERI)
Design and construction
Designed by General Atomics
Status
Decommissioned
First criticality
1962

Data: IAEA RRDB · updated on Sep 21, 2026

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