METHOD FOR DECONTAMINATING GAMMA-RAY SOURCE CAPSULES

FIELD: radiation technology. SUBSTANCE: proposed method designed to clean surfaces of capsules containing high-activity sources from radioactive deposits includes sequential treatment of gamma-ray source capsules with oxidizing solution of potassium permanganate with nitrous acid and reducing soluti...

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Bibliographic Details
Main Authors KOZYK M.P, DMITRIEV V.V, SHEVCHENKO V.G, TISHKOV V.M, BUSYREV V.L, ZAIKA V.I, MIKHAJLOV A.I
Format Patent
LanguageEnglish
Russian
Published 10.01.2003
Edition7
Subjects
DECONTAMINATION ARRANGEMENTS THEREFOR
NUCLEAR ENGINEERING
NUCLEAR PHYSICS
PHYSICS
PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULARRADIATION OR PARTICLE BOMBARDMENT
TREATING RADIOACTIVELY CONTAMINATED MATERIAL
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Summary:FIELD: radiation technology. SUBSTANCE: proposed method designed to clean surfaces of capsules containing high-activity sources from radioactive deposits includes sequential treatment of gamma-ray source capsules with oxidizing solution of potassium permanganate with nitrous acid and reducing solution containing oxalic and nitrous acids. Oxidizing treatment is made with aid of solution containing 30-40 g/l of potassium permanganate and 40-50 g/l of nitrous acid; reducing solution incorporates 40-50 g/l of oxalic acid and 5-7 g of nitrous acid. Upon reducing treatment capsules are rinsed with solution of hydroxyethyl idendiphosphate acid and potassium hydroxide in the amount of 30-40 and 14-20 g/l, respectively. Process is conducted at all stages in nucleate bubbling mode due to radiation heat transfer from sources being treated. EFFECT: enhanced efficiency of decontamination process, simplified design of instruments used, facilitated procedure. 2 cl, 4 dwg, 4 tbl
Bibliography:Application Number: RU20010107754