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United States United States · Zion, IL · 42.453, -87.840 (approximate location)

WNTR Westinghouse Nuclear Training

WNTR Westinghouse Nuclear Training, a research reactor (tank) in Zion, IL, United States, with 10 kW of thermal power, operated by Westinghouse Electric Corporation. Decommissioned, first critical in 1972.

It was one of the 340 research reactors the United States has had; 48 remain in operation today. It went critical 30 years after the first research reactor in the United States, CP-1, Chicago Pile 1 (1942). 36 tank-type reactors remain in operation today across 23 countries. Its declared uses include training.

Country
United States
City
Zion, IL
Type
Tank
Thermal power
10 kW
Operator
Westinghouse Electric Corporation
Status
Decommissioned
First criticality
1972
Purpose
Training

Data: IAEA RRDB · updated on Sep 3, 2026

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