Hanford’s historic B Reactor, the world’s first full-scale nuclear reactor, went critical on Sept. 26, 1944. Courtesy TRIDEC Wigner’s team had designed the Hanford reactors to house 1,600 ...

Hanford’s historic B Reactor, the world’s first full-scale nuclear reactor, went critical on Sept. 26, 1944. Courtesy TRIDEC Wigner’s team had designed the Hanford reactors to house 1,600 ...

Work to remove the used fuel from Reactor 3 began in May 2022 and has now been completed. Work to defuel Reactor 4 is due to start shortly. EDF said the aim is to have the second reactor defueled and ...

Machinery is painted a minty green, and there are handwritten signs labeling parts of the reactor. There’s about two hours to explore the building before heading back to the visitor center.

The reactor was completed and went critical — or started up — in September 1944. B Reactor produced the plutonium that powered the first man-made atomic explosion, the Trinity test, in the New ...

The B Reactor at the Hanford site was the world’s first full-scale nuclear reactor. Here, scientists and engineers pioneered the technology behind nuclear reactors.

Machinery is painted a minty green, and there are hand-written signs labeling parts of the reactor. The control room is open to visitors during the B Reactor tour.

B-Reactor Tours Visit Tri-Cities October DOE History Science Demand Hanford, Wash. — B-Reactor tours have been extended again after tour dates for the month of July quickly filled up.

After a blockbuster start to the 2024 tour season for Hanford’s historic B Reactor, the Department of Energy has agreed to extend the season through October rather than shutting down for repairs ...