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Locating Mechanical Damages Using Magnetic Flux Leakage Inspection in Gas Pipeline System  

Kim, Jae-Joon (School of Computer and Communication Engineering, Daegu University)
Publication Information
Journal of the Korean Society for Nondestructive Testing / v.30, no.6, 2010 , pp. 521-526 More about this Journal
Abstract
Gas transmission pipelines are often inspected and monitored using the magnetic flux leakage method. An inspection vehicle known as a "pig" is launched into the pipeline and conveyed along the pipe by the pressure of natural gas. The pig contains a magnetizer, an array of sensors and a microprocessor-based data acquisition system for logging data. This paper describes magnetic flux leakage (MFL) signal processing used for detecting mechanical damages during an in-line inspection. The overall approach employs noise removal and clustering technique. The proposed method is computationally efficient and can easily be implemented. Results are presented and verified by field tests from an application of the signal processing.
Keywords
Edge Detection; Gas Pipeline Inspection; Mechanical Damage; Magnetic Flux Leakage Signal;
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Times Cited By KSCI : 1  (Citation Analysis)
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