The objective of the project is to provide a new repair method or plasma coating of an advanced material for repairing surface defects or corrosion defects found on the inner surface or structure of the hopper and rear body part of the RCVs in Hong Kong. Details are as below:

• (i) Due to the high water content of food residue and a mix of solid contents (including metals, hard plastics/wood) in the domestic wastes that are carried and compacted inside the hopper of the RCVs, the inner surface or structure of the hopper and rear body part are vulnerable to different degrees of surface defects and corrosion defects. Welding is commonly adopted for repair.
• (ii) Plasma coating (with high abrasion and corrosion resistance properties) of an advanced material or new repair method will be explored for repairing the surface and corrosion defects inside hoppers. The new repair method should complete any surface repair within a reasonable time (e.g. 1-2 days) and the new coating material should have adequate abrasion resistance protection (e.g. not less than 6 months under harsh operating environment).

Provision of a new repair method or plasma coating of an advanced material for RCVs