Monitoring corrosion defects in pipelines by non-destructive inspection

In order to be able to detect defects such as dents, corrosion, cracks, etc. in time, pipelines are inspected at regular intervals. So-called intelligent pigs working on the basis of non-destructive technologies have proved successful for pipeline inspection. In the field of corrosion detection, the ultrasonic technology provides precise and detailed wall thickness measurement. Based on the determined corrosion profile, suitable assessment methods can be used to calculate the remaining safe pipeline pressure (MAOP) for the corroded pipeline. Repeated inspections allow to determine realistic corrosion rates for the inspected pipelines.