Planys conducted underwater inspection of quay walls for a local municipality in Netherlands. The quay walls form the lock gate arrangement to maintain water level upstream and also allow for movement of boats. It was undesirable to undertake inspection with divers due to safety risks associated with the practice.

Scope of Work: Visual inspection and thickness measurements (by waterjet cleaning & ultrasonic thickness (UT) measurement) at 5 quay walls using robotics.

Planys Solution: The inspection was performed using Planys’ ROV Beluga equipped with high resolution camera, high pressure water-jet cleaning nozzle, Ultrasonic thickness measurement probe and depth sensor.

1. Over 500+ UT measurements were taken across the quay walls
2. High pressure water jet cleaning pump and nozzle mounted on the ROV was used to clean the soft marine growth and ROV was maneuvered to touch the structure with a contact ultrasonic thickness measurement probe.
3. All data sets were plotted against geo-tagged CAD drawing of every pile at every location on the Planys Analytics Dashboard (PAD) with localised click-to-view video feature.

Photographs captured during ROV inspecting the quay wall, schematic showing the setup and first person camera view of UT probe touching the quay wall.

Figures shows consolidated thickness measurements at a particular location measured against design thickness, threshold thickness on Planys Analytics Dashboard (PAD).