MEASURING METHOD OF RADIATION IN SEALED CONTAINER

摘要

PROBLEM TO BE SOLVED: To provide a measuring method of a radiation in a sealed container capable of measuring a radioactive material or the like with high sensitivity without lowering a concentration of gas sealed in the sealed container. SOLUTION: Sealed gas is taken from the sealed container 2 by putting the sealed gas in the sealed container 2 into a depressurized environment, and a dusty radioactive material existing in the sealed gas is recovered by a filter, and a radiation concentration in the filter is measured. The sealed gas after recovering the dusty radioactive material therefrom by the filter is returned again into the sealed container 2. Gas of the same quantity as the sealed gas taken out from the sealed container 2 may be supplied into the sealed container 2 during storage or inspection of the sealed gas recovered from the sealed container 2. COPYRIGHT: (C)2009,JPO&INPIT