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United States United States · Palo Alto, CA · 37.429, -122.138 (approximate location)

SPR Stanford Univ.

SPR Stanford Univ., a research reactor (pool) in Palo Alto, CA, United States, with 10 kW of thermal power, operated by Stanford Univ. School of Engineering. Decommissioned, first critical in 1959.

It was one of the 340 research reactors the United States has had; 48 remain in operation today. It went critical 17 years after the first research reactor in the United States, CP-1, Chicago Pile 1 (1942). 48 pool-type reactors remain in operation today across 28 countries. Its declared uses include teaching.

Country
United States
City
Palo Alto, CA
Type
Pool
Thermal power
10 kW
Operator
Stanford Univ. School of Engineering
Status
Decommissioned
First criticality
1959
Purpose
Teaching

Data: IAEA RRDB · updated on Sep 3, 2026

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