Nuclear criticality safety modeling of an LEU deposit

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The construction of the Oak Ridge Gaseous Diffusion Plant (now known as the K-25 Site) began during World War H and eventually consisted of five major process buildings: K-25, K-27, K-29, K-31, and K-33. The plant took natural (0.711% {sup 231}U) uranium as feed and processed it into both low-enriched uranium (LEU) and high-enriched uranium (HEU) with concentrations up to {approximately}93% {sup 231}U. The K-25 and K-27 buildings were shut down in 1964, but the rest of the plant produced LEU until 1985. During operation, inleakage of humid air into process piping and equipment caused reactions with gaseous uranium hexafluoride ... continued below

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9 p.

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Haire, M. J.; Elam, K. R.; Jordan, W. C. & Dahl, T. L. November 1996.

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Description

The construction of the Oak Ridge Gaseous Diffusion Plant (now known as the K-25 Site) began during World War H and eventually consisted of five major process buildings: K-25, K-27, K-29, K-31, and K-33. The plant took natural (0.711% {sup 231}U) uranium as feed and processed it into both low-enriched uranium (LEU) and high-enriched uranium (HEU) with concentrations up to {approximately}93% {sup 231}U. The K-25 and K-27 buildings were shut down in 1964, but the rest of the plant produced LEU until 1985. During operation, inleakage of humid air into process piping and equipment caused reactions with gaseous uranium hexafluoride (UF{sub 6}) that produced nonvolatile uranyl fluoride (UO{sub 2}F{sub 2}) deposits. As part of shutdown, most of the uranium was evacuated as volatile UF{sub 6}. The UO{sub 2}F{sub 2} deposits remained. The U.S. Department of Energy has mitiated a program to unprove nuclear criticality safety by removing the larger enriched uranium deposits.

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9 p.

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INIS; OSTI as DE97000026

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  • Winter meeting of the American Nuclear Society (ANS) and the European Nuclear Society (ENS), Washington, DC (United States), 10-14 Nov 1996

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  • Other: DE97000026
  • Report No.: CONF-961103--19
  • Grant Number: AC05-96OR22464
  • Office of Scientific & Technical Information Report Number: 390649
  • Archival Resource Key: ark:/67531/metadc681547

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  • November 1996

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  • July 25, 2015, 2:20 a.m.

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  • Jan. 25, 2016, 7:23 p.m.

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Haire, M. J.; Elam, K. R.; Jordan, W. C. & Dahl, T. L. Nuclear criticality safety modeling of an LEU deposit, article, November 1996; Tennessee. (digital.library.unt.edu/ark:/67531/metadc681547/: accessed September 26, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.