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United States United States · Seattle · 47.605, -122.330 (approximate location)

UWNR Univ. Washington

UWNR Univ. Washington, a research reactor (other) in Seattle, United States, with 100 kW of thermal power, operated by UW College of Engineering. Decommissioned, first critical in 1961.

It was one of the 340 research reactors the United States has had; 48 remain in operation today. It went critical 19 years after the first research reactor in the United States, CP-1, Chicago Pile 1 (1942). Its declared uses include teaching.

Country
United States
City
Seattle
Type
Other
Thermal power
100 kW
Operator
UW College of Engineering
Status
Decommissioned
First criticality
1961
Purpose
Teaching

Data: IAEA RRDB · updated on Sep 3, 2026

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