A protrusion, as it relates to pipelines, is an object or dimensional anomaly within the pipeline that extends from the pipe’s internal diameter. Protrusions include, but are not limited to, bolts, clamps, debris, welding, burrs and abrupt changes in a pipe’s inner diameter. Protrusions typically obstruct the flow of fluids in the pipeline, which can lead to long-term piping issues.
Trenchlesspedia Explains Protrusion
Not only do protrusions obstruct fluid flow in the pipeline, but they can also disrupt trenchless rehabilitation techniques such as pipelining. The presence of internal surface anomalies can make it challenging to install linings such as CIPP (cured-in-place-pipe) liners. Additionally, obstructions in the pipe can hamper trenchless pipe inspection methods such as CCTV inspections, as protrusions that are large enough can obstruct the path of remotely controlled CCTV equipment. The presence of pipeline protrusions can also hinder internal manual investigations.