United States United States · Simi Valley, CA · 43.533, -112.945 (approximate location)

SNAPTRAN-1

SNAPTRAN-1, a research reactor (other) in Simi Valley, CA, United States, with 40 W of thermal power, operated by Rockwell International. Decommissioned, first critical in 1963.

It was one of the 340 research reactors the United States has had; 48 remain in operation today. It went critical 21 years after the first research reactor in the United States, CP-1, Chicago Pile 1 (1942). Its declared uses include research, development and experiments.

Country
United States
City
Simi Valley, CA
Type
Other
Thermal power
40 W
Operator
Rockwell International
Status
Decommissioned
First criticality
1963
Purpose
Research, development, and experiments

Data: IAEA RRDB · updated on Sep 3, 2026

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