United States · Idaho Falls, ID · 43.533, -112.945 (approximate location)

SPERT-4 Special Power Excursion Test

SPERT-4 Special Power Excursion Test, a research reactor (pool) in Idaho Falls, ID, United States, with 1 MW of thermal power, operated by Phillips Petroleum Company. Decommissioned, first critical in 1962.

It was one of the 340 research reactors the United States has had; 48 remain in operation today. It went critical 20 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

1 MW

Operator

Phillips Petroleum Company

Status

Decommissioned

First criticality

1962

Purpose

Nuclear data, materials testing

See also: every research reactor in United States · How research reactors work