ENES
United States United States · Urbana, IL · 40.110, -88.204 (approximate location)

LOPRA Univ. Illinois

LOPRA Univ. Illinois, a research reactor (tRIGA) in Urbana, IL, United States, with 10 kW of thermal power, operated by UIUC Dept of Nuclear, Plasma and Radiological Engineering. Decommissioned, first critical in 1971.

It was one of the 340 research reactors the United States has had; 48 remain in operation today. It went critical 29 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
Urbana, IL
Type
TRIGA
Thermal power
10 kW
Operator
UIUC Dept of Nuclear, Plasma and Radiological Engineering
Design and construction
Designed by General Atomics
Status
Decommissioned
First criticality
1971
Purpose
Teaching

Data: IAEA RRDB · updated on Sep 3, 2026

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