As result of inline inspection, some of the anomalies are calsified as "possible lamination", and recomendation is to uncover pipeline and inspect anomaly. After that if it is really lamination which is not parallel to pipe surface, repair should be done.
Question is, HOW TO INSPECT LAMINATION ANOMALY?
We have hand-held US device for measuring wall thickness. Idea from one college is to use that, and device should show "shallow thickness" on lamination point (measure until first lamination surface, not complete through material until other side of pipe wall). If it is not parallel, then moving device should change readout value. Is this realistic and usable way to check anomaly?
Another point is what are possible repair options i lamination is not parallel to pipe surface? I believe that composite wraps are not option? Only cut-out and metal clam shells?
Question is, HOW TO INSPECT LAMINATION ANOMALY?
We have hand-held US device for measuring wall thickness. Idea from one college is to use that, and device should show "shallow thickness" on lamination point (measure until first lamination surface, not complete through material until other side of pipe wall). If it is not parallel, then moving device should change readout value. Is this realistic and usable way to check anomaly?
Another point is what are possible repair options i lamination is not parallel to pipe surface? I believe that composite wraps are not option? Only cut-out and metal clam shells?