KOGAS stresses pipeline integrity, safety programs

Korea Gas Corp. (KOGAS) operates 1,525 miles of natural gas transmission pipelines in South Korea, a geographically small country but with a high population density. That means pipeline integrity management is very important to the communities it serves.Fig. 1 shows the KOGAS integrity-management system for transmission pipelines. The integrity-management process involves periodic monitoring, risk assessment, in-line inspection, defect assessment, and pipeline repairs. Click here to enlarge imageAccording to KOGAS’s standards for coating-defect surveys, each buried section of pipeline is assessed by direct current voltage gradient (DCVG) as a commissioning procedure, and every coat...

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