Improving Field Verification In Pipeline Integrity Management Programs

摘要

This study focused on establishing the error of the raw data collected by the 3D Toolbox and the depth calculations determined by the analysis software. Unlike most 3D imaging systems - where error is reported on a global basis - this study focused on determining error on a point-by-point basis. This is necessary because maximum allowable operating pressure (MAOP) calculations are driven by the deepest points of corrosion and not by an average metal loss over a large area. Consequently, understanding the error associated with individual measurement points is critical to determining if the MAOP calculations are valid and, ultimately, if the pipeline is safe.