Deposition of U, Cu, and Ni sulfates from dilute simulated HR fuel solution circulated through a heated Zircaloy-2 pipe section is reported. It was found that deposition occurred under boiling conditions in horizontal pipes because of a gas space which prevented wetting in the upper part of the pipe. Other salt deposition studies in an in-pile loop are reported. Effectiveness of oftwo different hydroclone mountings in removing corrosion products from a loop was studied. Results of chemical stability tests or aqueous solutions containing /sub 2/SO/sub 4/ at 300 C are given and discussed. Fluoride ion had no suppressing effect on …
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Deposition of U, Cu, and Ni sulfates from dilute simulated HR fuel solution circulated through a heated Zircaloy-2 pipe section is reported. It was found that deposition occurred under boiling conditions in horizontal pipes because of a gas space which prevented wetting in the upper part of the pipe. Other salt deposition studies in an in-pile loop are reported. Effectiveness of oftwo different hydroclone mountings in removing corrosion products from a loop was studied. Results of chemical stability tests or aqueous solutions containing /sub 2/SO/sub 4/ at 300 C are given and discussed. Fluoride ion had no suppressing effect on stress corrosion cracking caused by O/sub 2/- and Cl/sub 2/ containing phosphate-treated boiler water. The pretreatment of U-bend specimens of type 347 stainless steel in UO/sub 2/SO/sub 4/-H/sub 2/SO/sub 4/-CuSO/sub 4/at 100 to 300 C gave substantial protcction against stress-corrosion cracking in the same solution containing chlorides. Cast type 347 stainless steel was found more resistant to chloride-induced stress-corrosion cracking than wrought material. Cold-working destroyed the resistance. Corrosion of Zircaloy-2 by the heavy- phase of a high-temperaturc UO/sub 2/SO/sub 4/ solution was found to be insignificant; Cu had no effect. In l00-hr tests at 250 C Ti was not corroded signifieantly by OZ-free UO/sub 2/SO/sub4/ solutions, and no solution instability was noted. The corrosion rate of Incoloy 804 was tolerable but less than type 347 stainless steel in UO/sub 2/SO/sub 4/ at l00 to 300 C. A hard Cr-rich electrolyzed coating on 304 stainless steel was found to be useless in high- temperature fuel solutions but was stable at l00 in chloride-free environment. For preceding period see CF-58-10-95.) (T.R.H.)
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Griess, J. C.; Savage, H. C.; Greeley, R. S.; English, J. L.; Bolt, S. E.; Hess, D. N. et al.Quarterly Report of the Solution Materials Section for the Period Ending January 31, 1959,
report,
January 30, 1959;
Oak Ridge, Tennessee.
(https://digital.library.unt.edu/ark:/67531/metadc1019133/:
accessed February 13, 2026),
University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu;
crediting UNT Libraries Government Documents Department.
