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CONTENTS Background Radiographic Testing, Pipeline Girth Welds Automated UT Testing, Pipeline Girth Welds AUT Qualification Methodology, DNV-OSF101 Examples of AUT and RT Qualification results Summary & Conclusions Background: Girth Weld AUT in Pipeline Industry Automated UT introduced in the late 70s by RTD (NL): Rotoscan.Motivated by observations of large planar imperfections missed by radiography (RT).Fully analogue systems, mounted on CRC bands Zonal discrimination for use with workmanship acceptance criteria (no sizing) introduced in the 80s.Strip chart presentation.