A dentA local change in pipe surface contour caused by an external force such as mechanical impact or rock impingement but is not accompanied by loss of metal. which causes a smooth change in curvature of the pipe wall that contains an anomalyAny irregularity, defect, or abnormal condition identified in a pipeline system that deviates from the expected or normal operating condition. Anomalies in pipe… (such as e.g., gougeA type of mechanical damage characterized by a groove, cut, or indentation on the surface of the pipe. It typically occurs when a sharp object, such as a rock, …, corrosionThe deterioration or degradation of a pipeline caused by chemical or electrochemical reactions with its environment. Corrosion is a significant concern as it ca… loss, crackA fracture or discontinuity in the wall of a pipeline, where the material is separated or broken, potentially compromising the integrity and safety of the pipel…) and/or is associated with an adjacent girth, spiral or seam weldThe longitudinal or helical (also referred to as spiral) weld in pipe that was formed by joining two pieces of metal along their edges or seams..