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Title: Detecting internal corrosion of natural gas transmission pipelines: field-test systems for real-time corrosion measurement and better process control
Category: Technical papers from the Journal of Pipeline Integrity
Downloadable: Yes 
Catalog No.: 2090
Date of Publication: Q2, 2006
Price: $25.00 US
Authors: Bernard S Covino, Jr, Sophie J Bullard, Stephen D Cramer, Gordon R Holcomb, Margaret Ziomek-Moroz, Dr Russell D Kane, and Brian Meidinger
Abstract: A FIELD STUDY was conducted to evaluate the use of automated, multi-technique electrochemical corrosion-rate (ECR) monitoring devices and probes for detecting corrosion in environments found in natural gas transmission pipelines. The study involved measurement of real-time corrosion signals from operating pipelines and gas-processing plants. Results and interpretation were reported from four different field-test locations, the sites for which were selected to represent normal and upset conditions common in gas transmission pipelines. The environments consisted of two different levels of humidified natural gas, liquid hydrocarbon, and water from natural gas. Probe locations included the 6 and 12 o’clock positions of a natural gas pipeline carrying two-phase gas/liquid flow. The probe data was monitored using completely-remote solar-powered systems that provided real-time data transmission via wireless back to a pipeline control station. Data are also presented comparing the ECR probe data to that for coupons used to determine corrosion rate and to detect the presence of microbiologically-influenced corrosion (MIC).
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