DECONTAMINATION METHOD

• Main Authors: GOTO YUKIHIRO, NISHIMURA HIROTA, SEKIGUCHI YUKARI, WATANABE YOHEI, UWAKI HIDEAKI, MATSUMOTO TADAO, OGURA MASAHIRO
• Format: Patent
• Language: English; Japanese
• Published: 08.10.2020
• Subjects: APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL; PERFORMING OPERATIONS; PROCESSES FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TOSURFACES, IN GENERAL; SPRAYING OR ATOMISING IN GENERAL; TRANSPORTING

To provide a decontamination method that peels a coated film of a resin coating coated onto a wall surface from the wall surface after curing the coated film, and thereby removes oil containing a contaminant from the wall surface, in a peeling step of peeling the coated film from the wall surface while achieving excellent working efficiency and a step of conveying and treating the peeled coated film, expansion of a contamination range by an organic halide taken in the inside of the coated film can be suppressed.SOLUTION: A decontamination method includes: a foaming agent mixing step of mixing a resin coating with a foaming agent to obtain a foaming agent-containing resin coating P; a coating step of coating the foaming agent-containing resin coating P obtained in the foaming agent mixing step onto a wall surface W; a curing step of curing a coated film Pf of the foaming agent-containing resin coating P coated in the coating step; and a peeling step of peeling the coated film Pf cured in the curing step from the wall surface W.SELECTED DRAWING: Figure 4 【課題】壁面に塗布された樹脂塗料の塗膜を硬化後に壁面から剥離することで、壁面から汚染物質を含む油を除去する除染方法において、優れた作業効率を実現しながら、その塗膜を壁面から剥離する剥離工程やその剥離後の塗膜を搬送及び処理する工程において塗膜の内部に取り込んだ有機ハロゲン化物による汚染範囲の拡大を抑制することができる技術を提供する。【解決手段】樹脂塗料に発泡剤を混合して発泡剤含有樹脂塗料Ｐを得る発泡剤混合工程と、発泡剤混合工程で得た発泡剤含有樹脂塗料Ｐを壁面Ｗに塗布する塗布工程と、塗布工程で塗布された発泡剤含有樹脂塗料Ｐの塗膜Ｐｆを硬化させる硬化工程と、硬化工程で硬化した塗膜Ｐｆを壁面Ｗから剥離する剥離工程とを実行する。【選択図】図４