Planys conducted underwater visual inspection and cleaning of piles of two railway bridges in West India. The bridges had thick marine growth and was in extremely turbid waters, thus making it impossible for human divers to perform inspection. Further, due to tidal variation, only got a 2-hour window per day was available.

Scope of Work: Level 2 inspection (cleaning and visual inspection) of 39 foundations (with each one being a group 8 piles with pile cap).

Planys Solution: The inspection was performed using Planys’ ROV Beluga and ROV Orca equipped with high resolution camera, turbid water module, altimeter, depth sensor & was deployed from a boat.

1. Over 100 anomalies were identified and categorised into minor, moderate & major based on the size that included cracks, surface deformations, pinholes, corrosion.
2. Site engineers could see the inspection in live streaming and were able to understand the extent of the damages.
3. Planys’ proprietary image enhancement algorithm was used to enhance the videos taken in the extremely turbid waters
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.
5. The report also included customized suggestions for remedial measures to be taken further for repairs.

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

Images show dimensions extracted with Planys ROV of cracks and corrosion during inspection

“Hot-spot” map showing concentration of anomalies