Pipe wall crack detection and inspection of the external pipeline coating condition based on intelligent pigging

Based on EMAT technology, the RoCD2 tool fleet developed by ROSEN enables inspection of liquid and gas pipelines for cracks in the pipe wall and analysis of pipeline coating condition. With the unique highresolution sensor configuration, pipelines totaling more than 2,000 km have been successfully inspected since 2005. Numerous field verifications carried out in North America, the Middle East and Europe have confirmed the reliability of this tool fleet. Correlating the EMAT data with cathodic protection measurement data enables extended analysis of pipeline coating conditions. In addition, the combination of these data sets permits differentiation between coating defects and coating disbondment. This information constitutes an important parameter for SCC susceptibility models.