Specifications for Critical Mass Control Redox Plant - E-metal

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The specifications given in this document cover the processing of E-Metal. E-Metal is defined as natural uranium which has been enriched with U-235 to a concentration of 0.95 percent. The higher U-235 content makes the E-Metal more reactive than either natural or irradiated natural uranium. This difference in reactivity places a definite limit on the amount of massive metal that can be charged to the present Redox dissolvers. Once the slugs have been dissolved, the processing of E-Metal is essentially the same as the processing of natural uranium. Thus, except for the dissolver charge size, the following specifications reflect few … continued below

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26 p.

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Harmon, M. K. July 1, 1959.

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  • Pacific Northwest Laboratory
    Publisher Info: Pacific Northwest Lab., Richland, WA (United States)
    Place of Publication: Richland, Washington

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Description

The specifications given in this document cover the processing of E-Metal. E-Metal is defined as natural uranium which has been enriched with U-235 to a concentration of 0.95 percent. The higher U-235 content makes the E-Metal more reactive than either natural or irradiated natural uranium. This difference in reactivity places a definite limit on the amount of massive metal that can be charged to the present Redox dissolvers. Once the slugs have been dissolved, the processing of E-Metal is essentially the same as the processing of natural uranium. Thus, except for the dissolver charge size, the following specifications reflect few actual changes in numerical limits. One change that needs to be recognized is that the amount of U-235 plus plutonium in the metal solution is much closer to the maximum {open_quotes}always safe{close_quotes} ratio than with irradiated natural uranium. Once the E-Metal uranium has been separated from its accompanying plutonium, no critical mass of uranium can be assembled because the enrichment is below the minimum critical.

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26 p.

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OSTI as DE94013508; Paper copy available at OSTI: phone, 865-576-8401, or email, reports@adonis.osti.gov

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  • Other Information: PBD: 1 Jul 1959

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  • July 1, 1959

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  • Nov. 28, 2018, 2:33 p.m.

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  • Jan. 2, 2019, 5:43 p.m.

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Harmon, M. K. Specifications for Critical Mass Control Redox Plant - E-metal, report, July 1, 1959; Richland, Washington. (https://digital.library.unt.edu/ark:/67531/metadc1341383/: accessed May 14, 2025), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.

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