Process for pretreatment of chromium-rich oxide surfaces prior t

Details Process for pretreatment of chromium-rich oxide surfaces prior t Process for pretreatment of chromium-rich oxide surfaces prior t

1988-07-07

1990-04-03

Locker, Howard J.

Compositions

Radioactive compositions

134 3, 134 13, 134 2214, 134 2216, 134 27, 134 28, 134 41, 210682, 210684, 376306, 376310, G12F 900, C02F 508, C23G 102, B08B 704

Patent

active

049138499

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.

REFERENCES:
patent: 4226640 (1980-10-01), Bertholdt
patent: 4287002 (1981-09-01), Torok
patent: 4476047 (1984-10-01), Bonnici et al.
patent: 4481040 (1984-11-01), Brookes et al.
patent: 4685971 (1987-08-01), Murray et al.
patent: 4686067 (1987-08-01), Veysset et al.
patent: 4704235 (1987-11-01), Arvesen
patent: 4731124 (1988-03-01), Bradbury et al.
patent: 4839100 (1989-06-01), Goodall et al.
"Dekontamination von Hauptkuhlmittelpumpen mit dem neuen VS-Verfahren" in Atomwirtschaft at pp. 83-86.

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