October 2015, Vol. 242, No. 10
Features
Mastering Inspection of Challenging Pipelines
Pipelines are a valuable asset and need protection. In order to achieve this, a modern pipeline integrity management program usually includes regular inspections followed by integrity assessment, and if required, repair and rehabilitation measures. A proven method for the inspection of pipelines, especially high-pressure transmission pipelines, is the use of automated inspection tools that can survey pipelines from within, providing full-circumferential and axial coverage. These tools, generally referred to as free swimming inline inspection tools (ILI) or intelligent pigs, use non-destructive testing techniques such as magnetic flux leakage (MFL), ultrasound technology (UT), eddy current (

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