United States · Las Vegas, NV · 36.167, -115.149 (approximate location)

Planet

Planet, a research reactor (critical assembly) in Las Vegas, NV, United States, operated by Nevada National Security Site, LLNL. Operating, first critical in 1950.

It is one of the 48 research reactors operating in the United States, one of 5 zero-power assemblies among them. It went critical 8 years after the first research reactor in the United States, CP-1, Chicago Pile 1 (1942). It is one of 44 critical assemblies operating worldwide, spread across 12 countries. Its declared uses include materials testing.

Country

United States

City

Las Vegas, NV

Type

Critical assembly

Thermal power

critical

Operator

Nevada National Security Site, LLNL

Status

Operating

First criticality

1950

Purpose

Materials testing

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