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Autonomous Undersea Tunnel Inspection Robot TunnelScan Completes First Full-Tunnel Survey of the English Channel

VINCI Group's TunnelScan robot has completed the first unmanned full-tunnel inspection of the English Channel Tunnel, reducing the 50-kilometer tunnel survey time from two weeks to three days.

Autonomous Undersea Tunnel Inspection Robot TunnelScan Completes First Full-Tunnel Survey of the English Channel

France's VINCI Group announced on June 13 that its TunnelScan autonomous undersea tunnel inspection robot has completed the first unmanned full-tunnel survey of the English Channel Tunnel. Three TunnelScan robots navigated autonomously through the 50.5-kilometer tunnel, performing comprehensive inspections of the tunnel lining using laser scanning, ultrasonic flaw detection, and infrared thermal imaging.

The entire inspection took 72 hours, a dramatic reduction from the two weeks required for traditional manual surveys. The robots identified 17 areas of concern in the lining and three water seepage points, with positioning accuracy down to the millimeter level. All inspection data has been synchronized to the tunnel operations center's digital twin platform. VINCI plans to deploy TunnelScan for routine inspections of 30 undersea tunnels worldwide.