METHOD OF CHEMICAL DECONTAMINATION AND SYSTEM THEREFOR

摘要

A chemical decontamination method and a chemical decontaminating system f or chemically decontaminating radioactive nuclides from a metallic material surface contaminated by the radioactive nuclides. The method comprises the steps of reductive decontamination using a reductive decontaminating agent containing at least two kinds of components followed by decomposition of the reductive decontaminating agent using a decomposing apparatus for decomposing at least two kinds of chemical substances in the reductive decontaminating agent. In addition, the present invention further provides a method of chemical decontamination whic h moderates corrosion of material by using a chemical decontaminating agent decomposing apparatus capable of decomposing not only the components trapped by the cation exchange resin but also components trapped by an anion exchange resin at a time. A chemical decontaminating system comprising a catalyst decompositio n column in an upstream side of an ion exchange resin column and a hydrogen peroxide injection apparatus is also provided.