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PUREX (plutonium uranium reduction extraction) is a chemical method used to purify fuel for nuclear reactors or nuclear weapons. [7] PUREX is the de facto standard aqueous nuclear reprocessing method for the recovery of uranium and plutonium from used nuclear fuel ( spent nuclear fuel , or irradiated nuclear fuel).
PUREX, the current standard method, is an acronym standing for Plutonium and Uranium Recovery by EXtraction. The PUREX process is a liquid-liquid extraction method used to reprocess spent nuclear fuel, to extract uranium and plutonium, independent of each other, from the fission products. This is the most developed and widely used process in ...
Reprocessing capacity (tHM/yr) Construction start date Operation date Closure Purpose UP-1 Marcoule: Shut down 0.001 1958 1997 Military CEA APM Marcoule: Fast Breeder PUREX, DIAMEX, SANEX: Operational 6 1988 Civil UP-2 La Hague: LWR: PUREX: Shut down 900 1967 1974 Civil UP-2-400 La Hague: LWR PUREX: Shut down 400 1976 1990 Civil UP-2-800 La ...
The first reprocessing approach is based on the PUREX (Plutonium Uranium Reduction EXtraction) process, which is the standard and mature technology applied worldwide to recover uranium and plutonium from spent nuclear fuel at industrial scale. Following the dissolution of the spent fuel in nitric acid and the removal of uranium and plutonium ...
Introduced in 2011, [1] [2] the Purex Crystals product was the first crystal-form fabric softener sold in the United States. [3] According to an article in Good Housekeeping, the Purex Crystals fabric softener could safely be used on active wear and children's polyester sleepwear without harming flame resistance properties. [4]
In nuclear reprocessing plants about 96% of spent nuclear fuel is recycled back into uranium-based and mixed-oxide MOX fuels. One of the main method for the separation of spent fuel is the PUREX process, which separates the plutonium and other transuranics from the remainder of the spent fuel. The uranium and plutonium are separated in turn in ...
The PUREX process can be modified to make a UREX (URanium EXtraction) process which could be used to save space inside high level nuclear waste disposal sites, such as Yucca Mountain nuclear waste repository, by removing the uranium which makes up the vast majority of the mass and volume of used fuel and recycling it as reprocessed uranium.
In 1964, the Magnox reprocessing plant came on stream to reprocess spent nuclear fuel from the national Magnox reactor fleet. [52] The plant used the "plutonium uranium extraction" method for reprocessing spent fuel, with tributyl phosphate in odourless kerosene and nitric acid as extraction agents. The Purex process produces uranium, plutonium ...
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