Enriched uranium | Wikipedia audio article
Channel: wikipedia tts
Date: 08/12/2018

This is an audio version of the Wikipedia Article:
Enriched uranium


00:01:41 1 Grades
00:03:32 1.1 Reprocessed uranium (RepU)
00:04:26 1.2 Low enriched uranium (LEU)
00:05:06 1.3 Highly enriched uranium (HEU)
00:08:15 2 Enrichment methods
00:09:37 2.1 Diffusion techniques
00:09:46 2.1.1 Gaseous diffusion
00:10:40 2.1.2 Thermal diffusion
00:11:19 2.2 Centrifuge techniques
00:11:28 2.2.1 Gas centrifuge
00:12:27 2.2.2 Zippe centrifuge
00:13:00 2.3 Laser techniques
00:13:30 2.3.1 Atomic vapor laser isotope separation (AVLIS)
00:14:06 2.3.2 Molecular laser isotope separation (MLIS)
00:14:34 2.3.3 Separation of Isotopes by Laser Excitation (SILEX)
00:16:02 2.4 Other techniques
00:16:11 2.4.1 Aerodynamic processes
00:17:43 2.4.2 Electromagnetic isotope separation
00:18:37 2.4.3 Chemical methods
00:19:14 2.4.4 Plasma separation
00:19:57 3 Separative work unit
00:20:48 4 Cost issues
00:21:02 5 Downblending
00:21:16 6 Global enrichment facilities
00:21:28 7 See also
00:23:25 8 References
00:26:17 9 External links
00:27:18 undefined



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SUMMARY
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Enriched uranium is a type of uranium in which the percent composition of uranium-235 has been increased through the process of isotope separation. Natural uranium is 99.284% 238U isotope, with 235U only constituting about 0.711% of its mass. 235U is the only nuclide existing in nature (in any appreciable amount) that is fissile with thermal neutrons.Enriched uranium is a critical component for both civil nuclear power generation and military nuclear weapons. The International Atomic Energy Agency attempts to monitor and control enriched uranium supplies and processes in its efforts to ensure nuclear power generation safety and curb nuclear weapons proliferation.
During the Manhattan Project enriched uranium was given the codename oralloy, a shortened version of Oak Ridge alloy, after the location of the plants where the uranium was enriched. The term oralloy is still occasionally used to refer to enriched uranium. There are about 2,000 tonnes (t, Mg) of highly enriched uranium in the world, produced mostly for nuclear power, nuclear weapons, naval propulsion, and smaller quantities for research reactors.
The 238U remaining after enrichment is known as depleted uranium (DU), and is considerably less radioactive than even natural uranium, though still very dense and extremely hazardous in granulated form – such granules are a natural by-product of the shearing action that makes it useful for armor-penetrating weapons and radiation shielding. At present, 95 percent of the world's stocks of depleted uranium remain in secure storage.