[2C12-18] Dismantling and Decontamination Technology

[2C17] Study on Applicability of Laser Coating Removal Technique to Nuclear Power Plant

(4)Decontamination test for radioactive metallic wastes

inagaki hiromitsu¹, matsui kazuo¹, *takayuki utsushikawa², hiroe fujita², takashi kurebayashi², kazuaki tomizawa³, kazuhisa fujita⁴ (1. Chubu Electric Power Co.,, 2. Japan Environment Research Co.,, 3. Toyokoh Co.,, 4. Graduate school for the Creation of New Photonics Industries)

Keywords:Laser Decontamination, Coating removal by Laser, Fiber Laser, Decommissioning, Metallic Waste

As part of research and development toward application of laser film removal equipment to nuclear power plants, we have created a decontamination system for safely treating and processing radioactive fumes generated during laser decontamination, in a nuclear power plant. A decontamination test was conducted using the contaminated metal wastes. The contaminated surface of metal wastes such as FDW piping was treated with a fiber laser that named ”CoolLaser” (manufactured by Toyokoh Co., Ltd.) , and obtained decontamination factor (DF) was up to 19.8.