Proceedings of the KSME Conference (대한기계학회:학술대회논문집)

The Korean Society of Mechanical Engineers (대한기계학회)
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Development of Intelligent Pig for Detecting Corrosion on Pipeline Using MFL Technology

MFL 기술을 이용한 천연가스 배관 부식 검사용 인텔리전트 피그 개발

  • 조성호 (한국가스공사 연구개발원) ;
  • 김영근 (한국가스공사 연구개발원) ;
  • 박대진 (한국가스공사 연구개발원) ;
  • 유휘룡 (한국가스공사 연구개발원) ;
  • 구성자 (한국가스공사 연구개발원) ;
  • 박승수 (한국가스공사 연구개발원) ;
  • 김동규 (한국가스공사 연구개발원) ;
  • 노용우 (한국가스공사 연구개발원)
  • Published : 2001.06.27
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Abstract

This paper introduces developed prototype intelligent pig which detects corrosion on pipeline by using Magnetic Flux Leakage technology. The 8 inch developed MFL(Magnetic Flux Leakage) pig is composed of 5 yokes which magnetize pipeline wall and 45 Hall sensors which detect MFL signal. The designed MFL modules are analyzed by using magnetic circuit method in order to confirm whether pipeline wall is fully saturated. A variety of artificial defects are manufactured on 8 inch diameter steel pipeline in order to acquire MFL signals. So leakage flux of the axial, radial and circumferential component was acquired as defects. The results of this paper show that design technique for 8 inch MFL pig can be applied to large diameter MFL pig and 0.5mm defect depth can be detected.

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