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Enriched uranium is a type of uranium in which the percent composition of uranium-235 (written 235 U) has been increased through the process of isotope separation.Naturally occurring uranium is composed of three major isotopes: uranium-238 (238 U with 99.2732–99.2752% natural abundance), uranium-235 (235 U, 0.7198–0.7210%), and uranium-234 (234 U, 0.0049–0.0059%).
Superphénix had been a focus point of many groups opposed to nuclear power, including the green party Les Verts, since its planning and construction. A national network called Sortir du nucléaire was formed, bringing together hundreds of organisations: local committees, ecological associations, citizen movements and parties.
Nuclear power's contribution to global energy production was about 4% in 2023. This is a little more than wind power, which provided 3.5% of global energy in 2023. [167] Nuclear power's share of global electricity production has fallen from 16.5% in 1997, in large part because the economics of nuclear power have become more difficult. [168]
The fissioning of an atom of uranium-235 in the reactor of a nuclear power plant produces two to three neutrons, and these neutrons can be absorbed by uranium-238 to produce plutonium-239 and other isotopes. Plutonium-239 can also absorb neutrons and fission along with the uranium-235 in a reactor.
Dodewaard nuclear power plant was a nuclear power plant with a 55 MWe boiling water reactor (BWR) of General Electric in the Dutch town of Dodewaard. The plant halted energy production in 1997. Its final decommissioning has been postponed for a period of 40 years and the plant was placed into a safe enclosure configuration in 2005.
The twin Voyager spacecraft were launched in 1977, each containing a 500 watt plutonium power source. Over 30 years later, each source still produces about 300 watts which allows limited operation of each spacecraft. [132] An earlier version of the same technology powered five Apollo Lunar Surface Experiment Packages, starting with Apollo 12 in ...
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Arkansas Nuclear One (ANO) is a two-unit pressurized water nuclear power plant located on Lake Dardanelle outside Russellville, Arkansas. Owned by Entergy Arkansas and operated by Entergy Nuclear. It is the only nuclear power facility in Arkansas. [3] ANO has been in continuous operation for 50 years as of December 17, 2024.