SPERT-3 Special Power Excursion Test
SPERT-3 Special Power Excursion Test, a research reactor (pool) in Idaho Falls, ID, United States, with 60 MW of thermal power, operated by Phillips Petroleum Company. Decommissioned, first critical in 1958.
It was one of the 340 research reactors the United States has had; 48 remain in operation today. It went critical 16 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 nuclear data measurements and materials testing.
- Country
- United States
- City
- Idaho Falls, ID
- Type
- Pool
- Thermal power
- 60 MW
- Operator
- Phillips Petroleum Company
- Status
- Decommissioned
- First criticality
- 1958
- Purpose
- Nuclear data, materials testing
See also: every research reactor in United States · How research reactors work
Data: IAEA RRDB · updated on Sep 3, 2026