METHOD AND DEVICE FOR REMOVING CONTAMINATED PART ON INTERNAL WALL FACE OF CYLINDRICAL STRUCTURE

摘要

PROBLEM TO BE SOLVED: To safely and efficiently remove a part contaminated by a toxic substance such as dioxin on an internal wall face without requiring manual labor to suppress waste generation amount in the removing work and suppress work cost and waste treatment cost to the minimum extent when repairing and dismantling an incinerator and a cylindrical structure such as a chimney of a heating furnace.

SOLUTION: The internal wall face of the cylindrical structure is observed by a monitor. A plurality of heads arranged in the structure are moved in the direction of cylindrical axis to oppose to the detected contaminated part on the internal wall face. Each head is rotated around substantially vertical axis on the internal wall face and is revolved around the cylindrical axis. Bristle or a cutting blade held on each head is brought into pressure contact with the internal wall face to cut by rubbing or cut the internal wall face. Preferably, each head is arranged at two steps in the direction of cylindrical axis and the heads at each step are revolved in the reverse direction for each other.

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