Culvert Inspection

Planys conducted underwater visual inspections of a culvert for local municipality in Rotterdam, Netherlands. Usually, the culvert would be emptied by erecting two coffer dams on either side and sending a crawler robot (humans were not allowed to go in due to safety concerns in confined space). These would be very tedious and expensive. A more efficient solution was desired for a preliminary inspection and Planys underwater inspection solution were deployed.

Scope of Work: Visual inspection of the culvert up to 70m length from each side.

Planys Solution: The inspection was performed using Planys’ ROV Beluga equipped with high resolution camera (facing upwards) and depth sensor.

  1. The ROV system was deployed from the culvert entry point and the cockpit/command module was set up in a mobile van for the client o see the data live
  2. Minor anomalies were identified like rebars exposed and minor cracks.
  3. Planys ROV pilot navigated the ROV expertly through the culvert collecting crucial data.
  4. All anomalies/defects were plotted against geo-tagged CAD drawing of every section on the Planys Analytics Dashboard (PAD) with localised click-to-view video.

Images show deployment & site setup of the ROV system during inspection of culvert.


Images show ROV visible from a small hole in the road & re-bars exposed in the culvert top.

“Hot-spot” map showing concentration of anomalies along the culvert with parallel views of front and top camera