Underwater Automated System for Grid and Structure Inspection

Among the inspection tasks prescribed for civil engineering structures and oil and gas infrastructures, underwater crack detection belongs to the most challenging. This application note aims at demonstrating that the eddy current (EC) technique can be applied to these tasks reliably and efficiently, in particular with automated systems.

Our case study documents an application where the most advanced condition based maintenance procedures have been applied to a hydropower plant. The developed system matches the demand for limiting the exposure of divers to hazardous conditions and for a minimal or no impact on the plant operation. The results provided by the inspection system was key to condition based replacement of cracked grid components.

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