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The Hanford Site occupies 586 square miles (1,518 km 2) – roughly equivalent to half the total area of Rhode Island – within Benton County, Washington. [1] [2] It is a desert environment receiving less than ten inches (250 mm) of annual precipitation, covered mostly by shrub-steppe vegetation.
One of four example estimates of the plutonium (Pu-239) plume from the 1957 fire at the Rocky Flats nuclear weapons plant. The Rocky Flats Plant, a former United States nuclear weapons production facility located about 15 miles (24 km) northwest of Denver, caused radioactive (primarily plutonium, americium, and uranium) contamination within and outside its boundaries. [1]
Map of Rocky Flats with 905 Area highlighted. [26]: 18 The 1960s also brought more contamination to the site. By 1967, 3,500 barrels (560 m 3) of plutonium-contaminated lubricants and solvents had accumulated on Pad 903. A large number of them were found to be leaking, and low-level contaminated soil was becoming wind-borne from this area.
Watchdogs are raising new concerns about legacy contamination in Los Alamos, the birthplace of the atomic bomb and home to a renewed effort to manufacture key components for nuclear weapons. A ...
The US space agency has routinely had to carry out commands to shut off various science instruments over the years as the 47-year-old spacecraft drains its supply of plutonium.
On June 20, 2017, Exelon Generation, the owners of Three Mile Island's Unit 1, sent to the Nuclear Regulatory Commission a formal notice of its intention to shut down the plant on September 30, 2019, [63] unless the Pennsylvania legislature rescued the nuclear industry, which was struggling to compete as newfound natural gas resources drove ...
The 5 MWe experimental reactor operated intermittently until 1994 when it was shut down in accordance with the U.S.-North Korea Agreed Framework. Following the breakdown of the Agreed Framework in 2002, operation restarted in February 2003, creating plutonium within its fuel load at a rate of about 6 kg per year. [10]
However, the N Cell worked fine, and the RMA line was shut down for good in 1984. The RMC line was restarted on 1 July 1985, and ran until October. After multiple repairs, it was reactivated in April 1986 and produced weapons-grade plutonium for the next six months. Another shut down for a series of upgrades and repairs followed.