United States United States · Ballston Spa, NY · 43.007, -73.851 (approximate location)

S8G Submarine Prototype

S8G Submarine Prototype, a research reactor (other) in Ballston Spa, NY, United States, operated by Bechtel Marine Propulsion Co.. Operating, first critical in 1979.

It is one of the 48 research reactors operating in the United States, one of 5 zero-power assemblies among them. It went critical 37 years after the first research reactor in the United States, CP-1, Chicago Pile 1 (1942). It has been 47 years since its first criticality.

Country
United States
City
Ballston Spa, NY
Type
Other
Thermal power
critical
Operator
Bechtel Marine Propulsion Co.
Status
Operating
First criticality
1979

Data: IAEA RRDB · updated on Sep 3, 2026

More information

Related research reactors