A scheduled MFL metal loss inspection of a 48" diameter offshore loop line was halted when the caliper run encountered a severe dent. This 48 km (30 mile) pipeline is a crucial asset of the operators. Due to the identification of a severe dent successful inspection had now become a difficult challenge as a new technology would be required to inspect the loop line. 

• High-accuracy inline inspection using NDT Global’s ultrasonic technologies successfully detected metal loss and crack-like features 

• Critical reporting threshold for cracks 1 mm (0.04 in) depth, 25 mm (0.98 in) length) was maintained 

• Results will guide future inspection frequency, using trend analysis, and anomaly tracking, while applying only the most stringent internationally accepted codes, standards and specifications 

• Data and recommendations enable the operator to prevent pipeline failures by; removing or repairing significant defects, determine the interval between future inspections with or without repair of identified defects and calculate maximum allowable operating pressure (MAOP).