United States United States · Berkeley, CA · 37.870, -122.268 (approximate location)

BRR UC Berkeley

BRR UC Berkeley, a research reactor (tRIGA) in Berkeley, CA, United States, with 1 MW of thermal power, operated by University of California, Nuclear Engineering Dept. Decommissioned, first critical in 1966.

It was one of the 340 research reactors the United States has had; 48 remain in operation today. It went critical 24 years after the first research reactor in the United States, CP-1, Chicago Pile 1 (1942). 36 TRIGA reactors remain in operation today across 17 countries. It is one of 65 research reactors in 20 countries that General Atomics designed or built.

Country
United States
City
Berkeley, CA
Type
TRIGA
Thermal power
1 MW
Operator
University of California, Nuclear Engineering Dept
Design and construction
Designed by General Atomics
Status
Decommissioned
First criticality
1966
Purpose
Isotope production, teaching, materials testing

Data: IAEA RRDB · updated on Sep 3, 2026

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