This 100-Foot DOME is where America switches on brand-new reactors

4.5K views · 79 likes · Oct 31, 2026

At Idaho National Laboratory, the 100-foot containment dome of the retired EBR-II reactor has been rebuilt as DOME, a test bay where private companies bring factory-built microreactors and run them at full power. We break down the engineering behind the conversion, from a 59,000-…