Use of ECDA Approach in Prioritization of ILI Anomalies
An effective In-line Inspection (ILI) program must provide a prioritized excavation response plan to address anomalies identified as being of particular concern. Locations that show potential for imminent or short term failure are prioritized under Phase 1 and Phase 2 responses respectively. Anomalies that could grow to become a severe risk for pipeline integrity prior to the next ILI are prioritized as Phase 3 excavations. This paper describes the use of External Corrosion Direct Assessment (ECDA) principles in prioritizing Phase 3 anomalies on a gas pipeline in northern Ontario, resulting in a more effective excavation program. A type of ECDA prioritization criterion, based on the results of an integrated Close Interval Potential Survey/Direct Current Voltage Gradient (CIPS/DCVG) survey in conjunction with the results of Phase 1 and Phase 2 digs, is proposed.
A Case Study for a New Approach to Manage the Risk of Girth Weld Cracking in a Modern NPS 40 X70/X80 Pipeline with a combination of high resolution MFL, AXISS™ and IMU In-Line Inspection Technology
A case study – Improved efficiency of an integrity program using the EMAT technology
Intelligent solutions for inspection of challenging pipelines, case study: 10” rigid offshore oil riser inspection for wall thickness and cracks