Types of Overhaul System of Chengdu Metro

Including daily overhaul, regular overhaul and special overhaul.

1, daily maintenance: refers to the subway trains, equipment and facilities for daily inspection and maintenance to ensure normal operation and use.

2, regular maintenance: refers to a certain period or mileage requirements of the subway equipment and facilities for overhaul, maintenance and replacement, in order to ensure its long-term stable operation.

3, special overhaul: refers to the discovery of equipment failure, safety hazards or major events, to take urgent measures to overhaul and repair, to ensure that the subway operation is safe and normal.