United States · Idaho Falls, ID · 43.494, -112.006 (approximate location)

S1W Submarine Prototype

S1W Submarine Prototype, a research reactor (other) in Idaho Falls, ID, United States, with 70 kW of thermal power, operated by Idaho National Laboratory. Shut down, first critical in 1953.

It was one of the 340 research reactors the United States has had; 48 remain in operation today. It went critical 11 years after the first research reactor in the United States, CP-1, Chicago Pile 1 (1942). Its declared uses include training.

Country

United States

City

Idaho Falls, ID

Type

Other

Thermal power

70 kW

Operator

Idaho National Laboratory

Status

Shut down

First criticality

1953

Purpose

Training

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