Abstract: In the research and development of various advancedtechnologies needed for decontamination anddecommissioning of nuclear facilities, laser wasapplied to decontamination of metal and concretesurfaces and to cutting of large metal of low levelradioactive waste. (a) Laser decontamination for metalwaste: Metal waste was irradiated by laser in theatmosphere of chloride gas, and contaminant was changedfrom oxide to chloride which is sublimable or solublein water and could be easily removed; and also metalwaste coated with gel-decontamination reagent wasirradiated by laser, and contaminant could be removedthrough the laser-induced chemical reaction. (b) Laserdecontamination for concrete surface: Concrete surfacewas bursted or vitrified by laser irradiation andeasily removed. (c) Laser cutting: Laser cutter wasapplied to cutting of large metal wastes such as tanksarising from dismantling of nuclear facilities. !2
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