Inline Inspection for Cracks in Gas Pipelines: Enhancements Derived From 5 Years’ Operational Experience

Abstract

This paper will summarize the evolution of the EMAT technology since GE’s initial product launch in 2002. A key focus of this paper will be outlining several tool and analysis enhancements that result from the evaluation of over a 1000kms of EMAT tool pipeline inspection and 207 field confirmations. These tool and analysis enhancements are now incorporated in GE’s new 30 inch third generation EMAT In-Line Inspection (ILI) tool.

Sensing solutions for assessing and monitoring of nuclear power plants (NPPs)

“…(1996) measured the thickness changes of pipes using EMAT-generated waves. Other researchers have used EMATs to detect fl aws or SCC (Morimoto et al ., 1996;Hirao and Ogi, 1998;Kercel et al ., 2003;Uribe et al ., 2009;Tappert et al ., 2008Tappert et al ., , 2009Al-Fahad, 2009;Bucker et al ., 2009;Chang et al ., 2011;Marr et al ., 2011). Similar to damage detection techniques using other types of sensors, damage can be identifi ed by generating axisymmetric waves and measuring the refl ected non-axisymmetric waves from the damage in pulse-echo mode.…”