ONLINE, REAL-TIME CORROSION MONITORING FOR IMPROVINGPIPELINE INTEGRITY – TECHNOLOGY AND EXPERIENCE

摘要

This paper describes the evolution in corrosion monitoring technology from off-line historicalrnapplications to online, real-time use. It describes the results of laboratory and fieldrninvestigations performed to characterize the corrosion behavior in inhibited multiphase andrndehydrated transport lines, and water injection facilities. The emphasis of the discussion isrnmodern automated electrochemical monitoring instrumentation and methodologiesrnincorporating multiple techniques. The paper describes recent advances in technology (e.g.rnMicrochip encoding and distributed hardware with direct to a plant distributed control systemrn- DCS - capabilities) that have made it possible to apply a much simplified monitoringrnsolution to industrial applications on a real-time basis that provide information on corrosionrnand pitting. This automated, online corrosion monitoring has made it possible to activelyrninvolve plant personnel on a real-time basis to minimize corrosion, maintenance, failures andrnassociated costs. Data is presented that was analyzed on a real-time basis and used to quicklyrnassess corrosion and pitting tendencies, correlate short-term changes/upsets in operationrnenabling troubleshooting, and validating the effectiveness of the existing chemical treatmentrnand remediation programs.