United States · San Ramon, CA · 37.780, -121.978 (approximate location)

ARRR

ARRR, a research reactor (tRIGA) in San Ramon, CA, United States, with 250 kW of thermal power, operated by Aerotest Operations, Inc. Shut down, first critical in 1964.

It was one of the 340 research reactors the United States has had; 48 remain in operation today. It went critical 22 years after the first research reactor in the United States, CP-1, Chicago Pile 1 (1942). 36 TRIGA reactors remain in operation today across 17 countries. It is one of 65 research reactors in 20 countries that General Atomics designed or built.

Country

United States

City

San Ramon, CA

Type

TRIGA

Thermal power

250 kW

Operator

Aerotest Operations, Inc

Design and construction

Designed by General Atomics

Status

Shut down

First criticality

1964

Purpose

Neutron radiography

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