Method of evacuating radioactive waste treating container to vacuum

A method of evacuating a container to a vacuum for use in treating radioactive wastes by placing the waste into the container, and evacuating, sealing off and thereafter compressing the container, the method being characterized by placing the waste (6) into the container (5), forming over the waste...

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Bibliographic Details
Main Authors KOMATSU, FUMIAKI, MIYAO, HIDEHIKO, SHIOTSUKI, MASAO, KAWAMURA, SHIGEYOSHI
Format Patent
LanguageEnglish
French
German
Published 03.04.1991
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:A method of evacuating a container to a vacuum for use in treating radioactive wastes by placing the waste into the container, and evacuating, sealing off and thereafter compressing the container, the method being characterized by placing the waste (6) into the container (5), forming over the waste a filter layer (7) of particulate material fulfilling one of the following requirements : (1) A layer having a thickness of at least 5 mm and formed of a particulate material not smaller than 40 mu m to less than 105 mu m in mean particle size. (2) A layer having a thickness of D mm and formed of a particulate material not smaller than 105 mu m to not greater than 210 mu m in mean particle size d mu m, the thickness D and the mean particle size d having the relationship represented by : D >/= (20/105) x d - 15 and thereafter aspirating a gas through the filter layer (7) from thereabove to evacuate the container and sealing off the container.
Bibliography:Application Number: EP19900402566