Pipeline Inspection

Pipelines serve as the bloodline in many countries, carrying with them some very important substances like water, natural gas, crude oil or petroleum. Safeguarding them from corrosion (which is the greatest threat to pipeline safety and their optimum performance) is of primary importance because pipeline incidents can lead to loss of commodity, destruction of the environment and more importantly human injury/death. During construction (when pipelines are still aboveground), companies are able to ensure that welds are of high quality by having personnel conduct pipeline inspections using visual, X-ray, magnetic particle, ultrasonic and other inspection methods. But once a pipeline is placed underground, most companies then turn to “pigs” (devices that carry instruments for detection/inspection which are put into on one end of the pipeline, carried through the pipe by the flow of the liquid or gas, and taken out at the other end in order to collect, store and transmit data for analysis). Most pigs are approximately the same diameter as the pipe but may vary in length and commonly use magnetic flux leakage method or ultrasound to perform nondestructive inspections, detection, or repair. Read the full article here…


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