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Experimental Breeder Reactor No. 1

Arco, Idaho
County of Butte.
National Reactor Testing Station, Arco vicinity
National Register Number: 66000307
Resource type: Building.
Property type: Education - research facility. The threat level was Satisfactory in
Certified Local Government: NO
This NHL offers public access.
Please contact the NHL directly for visitor information.
Current use/information: Tours available by apt. June-August; http://www.atomictourist.com/ebr.htm; 208-526-0050.
Web Site: www.inel.gov/resources/tours/ebr1.htm.

Statement of Significance (as of designation - December 21, 1965):
On December 20, 1951, the EBR-I produced the first usable amounts of electricity created by nuclear means; in July 1963, it was the first reactor to achieve a self-sustaining chain reaction using plutonium instead of uranium as the major component in the fuel. In addition, the EBR-I was the first reactor to demonstrate the feasibility of using liquid metal at high temperatures as a reactor coolant.

The landmarkI is very well maintained.

Save America's Treasure grant replaced brick and mortar on the exterior. Interpretive signs and displays were undated on the inside.

Comments and questions about the database may be directed to NHL_info@nps.gov