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United States United States · Silver Spring, MD · 38.985, -77.113

DORF TRIGA Mark F

DORF TRIGA Mark F, a research reactor (tRIGA) in Silver Spring, MD, United States, with 250 kW of thermal power, operated by Harry Diamond Laboratories. Decommissioned, first critical in 1961.

It was one of the 340 research reactors the United States has had; 48 remain in operation today. It went critical 19 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
Silver Spring, MD
Type
TRIGA
Thermal power
250 kW
Operator
Harry Diamond Laboratories
Design and construction
Designed by General Atomics
Status
Decommissioned
First criticality
1961
Purpose
Isotope production, neutron radiography, activation analysis

Data: IAEA RRDB · updated on Sep 3, 2026

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