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Chromium in aqueous nitrate plutonium process streams: Corrosion of 316 stainless steel and chromium speciation

Technical Report ·
DOI:https://doi.org/10.2172/10171982· OSTI ID:10171982

According to the measurements made in this study, the only situation in which chromium (+6) could exist in a plutonium process solution is one in which a feed containing chromium is dissolved in a glass pot dissolver in high nitric acid concentration and at high temperature. But when the resulting feed is prepared for ion exchange, the chemical treatment reduces chromium to the +3 state. Any solution being processed through the evaporator will only contain chromium in the +3 state and any chromium salts remaining in the evaporator bottoms will be chromium +3 salts.

Research Organization:
Los Alamos National Lab., NM (United States)
Sponsoring Organization:
USDOE, Washington, DC (United States)
DOE Contract Number:
W-7405-ENG-36
OSTI ID:
10171982
Report Number(s):
LA-UR--94-2400; ON: DE94016288
Country of Publication:
United States
Language:
English