TD Williamson Inc. announced the successful inspection of a 109-mile, 20-inch pipeline in Illinois by its 20-inch Multiple DataSet (MDS) inline inspection tool containing deformation, axial magnetic flux leakage (MFL), patented SpirALL MFL, Low Field MFL (LFM) and XYZ Mapping.

According to a company release, MDS can detect and characterize mechanical damage or dents that are less than 1%. Through use of LFM as the primary data set, pipe joints can be categorized by their magnetic permeability characteristics.