CHEMICAL DECONTAMINATION APPARATUS AND DECONTAMINATION METHOD THEREIN

摘要

A chemical decontamination apparatus in which ozonized water is used to chemically dissolve and remove a radioactive-substance-containing oxide film formed or deposited to the surface of a substance to be decontaminated. This chemical decontamination apparatus comprises an ozone generator for generating ozone gas, an ozone feeder for feeding the ozone gas generated to an ozone feed part located in water, and a sintered metallic element (37) which is disposed in the ozone feed part and receives the ozone gas from the ozone feeder. It has a constitution in which the ozone gas fed to the inside of the sintered metallic element from the ozone feeder is caused to flow outside the element and supplied to water to thereby produce ozonized water.