Three Gorges Northern Line Ship Lock Completes Maintenance Task and Resumes Navigation Ahead of Time. The maintenance not only requires the completion of various conventional maintenance projects such as herringbone doors, anti-arc doors, water conveyance corridors, etc.
16 units and more than 800 people participated in the maintenance, and a total of 39 maintenance items in 5 categories were completed. The upgrade of the industrial control system of the Three Gorge North Line ship lock has further improved the safety and reliability of ship lock operation.