2019. Vol.22. No. 2, pp. 52–55
Large Stand-off Magnetometry Method and Metal Magnetic Memory Technology Applied to Pipelines Inspection
Advantages of this method are the capabilities to found anomalies with a remote technique, this allows us to inspect the pipeline with any change of its normal operation condition, but the results yield always a qualitative identification of the anomalies.
On the other hand, with the defect in pre-destruction zone, it is necessary make an excavation to quantify the level of the anomalies with other conventional technique. The LSM-MMM methods dont replace the conventional methods but it is a very good alternative to inspect lines when physical or operational conditions do not permit a traditional method of inspection. Moreover, these methods combined with other techniques of nondestructive inspection, allow us to accomplish a plan of integrity for unpiggable lines.
Keywords: pipelines inspection, magnetic testing, metal magnetic memory, smart pigging