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00740 DESIGN OF CATHODIC PROTECTION FOR 1,900 MILES (3,050 KILOMETERS) OF A PROPOSED 36-INCH (914 ram) NATURAL GAS LINE IN THE UNITED STATES AND CANADA USING COMPUTER AIDED TECHNOLOGY

Product Number: 51300-00740-SG
ISBN: 00740 2000 CP
Author: Lorne Carlson, P. Eng., John H. Fitzgerald III, P.E., JeffA. Schramuk, R. David Webster. P. Eng.
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The mainline pipeline runs from northwest Alberta in Canada to the area of Chicago, Illinois in the United States. Numerous lateral pipelines from northeast British Columbia and northwest Alberta feed gas into the main pipeline. A computer analysis of the cathodic protection attenuation and voltage gradients was made. Rectifier and groundbed installations are to be located at compressor stations and main line block valve sites. Deep anode groundbeds are being used exclusively, so an analysis of subsurface geology was conducted. A computer analysis of AC induction was completed in areas where the pipeline parallels high voltage transmission lines. Keywords: AC induction, attenuation, cathodic protection, deep anode groundbeds, gas transmission pipeline, high pressure gas pipeline, impressed current rectifiers, subsurface geology, voltage gradient
The mainline pipeline runs from northwest Alberta in Canada to the area of Chicago, Illinois in the United States. Numerous lateral pipelines from northeast British Columbia and northwest Alberta feed gas into the main pipeline. A computer analysis of the cathodic protection attenuation and voltage gradients was made. Rectifier and groundbed installations are to be located at compressor stations and main line block valve sites. Deep anode groundbeds are being used exclusively, so an analysis of subsurface geology was conducted. A computer analysis of AC induction was completed in areas where the pipeline parallels high voltage transmission lines. Keywords: AC induction, attenuation, cathodic protection, deep anode groundbeds, gas transmission pipeline, high pressure gas pipeline, impressed current rectifiers, subsurface geology, voltage gradient
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