Abstract
Characterization of C-14 in PWR Radioactive Wastes has been researched and formation mechanisms of C-14 have been discussed. It was found from the research results that the chemical formation of C-14 existed in primary coolant was organic and was low molecule compounds which are soluble in water. On the other hand, C-14 existed in condensate waste liquid and existed on solid wastes were insoluble in water and chemically stable. The insoluble C-14 component was considered to be produced by activation reaction between neutron and substances with nitrogen. Those were thought to be decomposition substances escaped from high molecular organic materials, such as mixed bed resin or diaphragm seal etc.
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