Process for pretreatment of chromium-rich oxide surfaces...

Details Process for pretreatment of chromium-rich oxide surfaces... Process for pretreatment of chromium-rich oxide surfaces...

C - Chemistry, Metallurgy

23

F

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C23F 1/02 (2006.01) B08B 7/00 (2006.01) C02F 5/08 (2006.01) C23G 1/08 (2006.01) G21F 9/00 (2006.01)

Patent

CA 1303948

ABSTRACT A process for pretreatment of chromium-rich oxide surfaces of nuclear reactor cooling system components involves application of a dilute acidic reagent comprising potassium permanganate and chromic acid, at elevated temperatures. No ozone is added or necessary for effective decontamination with the pretreatment reagent.

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