The experimental procedures used and the results obtained in studying the plateout of nongaseous fission products that may escape from a helium gas stream are discussed. Results show that significant quantities of high-activity fission products are volatilized from powdered uranium dioxide at 1800 deg F, and the gross activity for each of the materials (Nichrome, type 302 stainless steel, and quartz) exposed to the fission product vapors follows the same general pattern. Some indication is given that high nickel content promotes plateout at high temperatures as is shown by testing nickel, Nichrome, types 310 and 405 stainless steel, and quartz. …
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The experimental procedures used and the results obtained in studying the plateout of nongaseous fission products that may escape from a helium gas stream are discussed. Results show that significant quantities of high-activity fission products are volatilized from powdered uranium dioxide at 1800 deg F, and the gross activity for each of the materials (Nichrome, type 302 stainless steel, and quartz) exposed to the fission product vapors follows the same general pattern. Some indication is given that high nickel content promotes plateout at high temperatures as is shown by testing nickel, Nichrome, types 310 and 405 stainless steel, and quartz. Radioisotopes that were identified as being deposited on the specimens were iodine-131 and -133, molybdenum-99, ruthenium- 103, and tellurium-132. Plateout occurred on all of the materials exposed to the helium stream from 1700 to 400 deg F. (N.W.R.)
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Johnson, D. E.; Tobin, J. M. & Buchanan, J. D.Fission-Product Plateout From a Helium Gas Stream,
report,
March 10, 1961;
United States.
(https://digital.library.unt.edu/ark:/67531/metadc1053180/:
accessed April 1, 2023),
University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu;
crediting UNT Libraries Government Documents Department.
