East Tennessee Technology Park | Wikipedia audio article
Channel: wikipedia tts
Date: 2019-01-18

This is an audio version of the Wikipedia Article:
https://en.wikipedia.org/wiki/K-25


00:02:45 1 Background
00:05:58 2 Gaseous diffusion
00:09:48 3 Organization
00:10:08 4 Codename
00:14:26 5 Research and development
00:15:29 5.1 Diffusers
00:15:39 5.2 Pumps
00:17:30 5.3 Barriers
00:19:14 6 Construction
00:23:42 6.1 Power plant
00:25:26 6.2 Gaseous diffusion plant
00:28:42 6.3 Other buildings
00:34:35 7 Operations
00:38:52 8 Closure and demolition
00:45:53 9 Notes



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Voice name: en-GB-Wavenet-B


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SUMMARY
=======
K-25 was the codename given by the Manhattan Project to the program to produce enriched uranium for atomic bombs using the gaseous diffusion method. Originally the codename for the product, over time it came to refer to the project, the production facility located at the Clinton Engineer Works in Oak Ridge, Tennessee, the main gaseous diffusion building, and ultimately the site. When it was built in 1944, the four-story K-25 gaseous diffusion plant was the world's largest building, comprising over 1,640,000 square feet (152,000 m2) of floor space and a volume of 97,500,000 cubic feet (2,760,000 m3).
Gaseous diffusion is based on Graham's law, which states that the rate of effusion of a gas is inversely proportional to the square root of its molecular mass. The highly corrosive uranium hexafluoride (UF6) was the only known compound of uranium sufficiently volatile to be used in this process. Before this could be done, the Special Alloyed Materials (SAM) Laboratories at Columbia University and the Kellex Corporation had to overcome formidable difficulties to develop a suitable barrier.
Construction of the K-25 facility was undertaken  by J. A. Jones Construction. At the height of construction, over 25,000 workers were employed on the site. Gaseous diffusion was but one of three enrichment technologies used by the Manhattan Project. Slightly enriched product from the S-50 thermal diffusion plant was fed into the K-25 gaseous diffusion plant. Its product in turn was fed into the Y-12 electromagnetic plant. The enriched uranium was used in the Little Boy atomic bomb used in the atomic bombing of Hiroshima. In 1946, the K-25 gaseous diffusion plant became capable of producing highly enriched product.
After the war, four more gaseous diffusion plants named K-27, K-29, K-31 and K-33 were added to the site. The K-25 site was renamed the Oak Ridge Gaseous Diffusion Plant in 1955. Production of enriched uranium ended in 1964, and gaseous diffusion finally ceased on the site on 27 August 1985. The Oak Ridge Gaseous Diffusion Plant was renamed the Oak Ridge K-25 Site in 1989, and the East Tennessee Technology Park in 1996. Demolition of all five gaseous diffusion plants was completed in February 2017.