Ultrasonic ILI was the only feasible means to inspect this line, which required a liquid coupling medium to be introduced. Due to the importance of the pipeline, a sequence of two inspection runs was selected. The first run was completed using an NDT Global ultrasonic circumferential crack (UCc) tool to address the detection of circumferential cracks and crack-like anomalies. The second tool selected was the ultrasonic metal loss with pitting resolution (UMp) tool to detect metal loss anomalies, pitting, laminations and inclusions.
Associated risks were reduced by NDT Global taking full responsibility of preparing and cleaning the line along with a complete re-establishment procedure. All inspection results were independently verified to be highly accurate.
Express reports were delivered within 5 days of each run and full reports within the agreed timelines. Express reporting has been instrumental in bringing back the pipeline to normal operation.
