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07649 Non-Contact Stray Current Measurements in a Multi-Line, Multi-Crossing Pipeline Corridor

Picture for 07649 Non-Contact Stray Current Measurements in a Multi-Line, Multi-Crossing Pipeline Corridor
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Product Number: 51300-07649-SG
ISBN: 07649 2007 CP
Author: Gord W. Parker
Publication Date: 2007
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$20.00
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Stray Current (SC) has been an area of concern to Cathodic Protection professionals since at least 1917(1) and in the intervening century it has only become a bigger problem. The three biggest causes of increased CP interference is the increased use of underground utility construction, increased oil and gas exploitation, and increased number of electric rail systems. While analyzing the effects of SC is straightforward, methods of analyzing the problem are rather difficult. Specifically, gathering the data was an inefficient process. Measuring potentials gave an incomplete picture of what was happening and measuring current was difficult. Modern electronics and software assists in the ease of gathering enough data to assess SC and helping make the information more easily analyzed. The biggest advancement may be noncontact test methods and the ability to accurately measure DC currents.
Stray Current (SC) has been an area of concern to Cathodic Protection professionals since at least 1917(1) and in the intervening century it has only become a bigger problem. The three biggest causes of increased CP interference is the increased use of underground utility construction, increased oil and gas exploitation, and increased number of electric rail systems. While analyzing the effects of SC is straightforward, methods of analyzing the problem are rather difficult. Specifically, gathering the data was an inefficient process. Measuring potentials gave an incomplete picture of what was happening and measuring current was difficult. Modern electronics and software assists in the ease of gathering enough data to assess SC and helping make the information more easily analyzed. The biggest advancement may be noncontact test methods and the ability to accurately measure DC currents.
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