Y-12 Development Division technical progress report, period ending January 1, 1990 Page: 3 of 30
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OZONE TREATMENT OF RECYCLED NITRIC ACID
Ozone treatment removes trace amounts of organics and chloride ions from recycled
acid. Heating significantly reduces this reaction time for removing these impurities. A new
heater design was reinstalled on the recycle system, reducing the ozonation time from 70 to
100 h to 30 to 40 h. This reduction in ozonation time resulted in increased acid recovery and
reduced acid wastes that had to be discarded. (Page 6)
OXIDATION OF DEPLETED URANIUM CHIPS
Shallow land burial in Bear Creek Burial Ground (BCBG) of depleted uranium and
uranium alloy chips has been discontinued, and these materials will now be processed at the
Uranium Chip Oxidation Facility (UCOF). A series of chip burns was made to reduce the
overall flameout frequency to 1% to comply with UCOF safety documentation. This testing
phase reduced the flameout frequency to 2 per 2,959 burns (<0.1%), which is a 92%
decrease of flameouts over last quarter. This work successfully demonstrated that all of the
uranium and uranium alloy chips (except sawfines) can be safely oxidized at UCOF with a
flameout frequency of 1% or less. (Page 10)
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Kosinsik, F.E. (comp.). Y-12 Development Division technical progress report, period ending January 1, 1990, report, September 28, 1990; United States. (https://digital.library.unt.edu/ark:/67531/metadc1208403/m1/3/: accessed March 23, 2019), University of North Texas Libraries, Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.