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United States United States · West Lafayette, IN · 40.442, -86.912 (approximate location)

Purdue Subcritical Pile (PSP)

Purdue Subcritical Pile (PSP), a research reactor (subcritical assembly) in West Lafayette, IN, United States, operated by Purdue Univ., School of Nuclear Engineering. Operating.

It is one of the 48 research reactors operating in the United States, one of 5 zero-power assemblies among them. It is one of 20 subcritical assemblies operating worldwide, spread across 13 countries.

Country
United States
City
West Lafayette, IN
Type
Subcritical assembly
Thermal power
critical
Operator
Purdue Univ., School of Nuclear Engineering
Status
Operating
First criticality

Data: IAEA RRDB · updated on Sep 3, 2026

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