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08070 Pipe-to-Soil Potential Measurements, The Basic Science

Based on some articles that have been published in Materials Performance (MP) and the NACE Courses 9 and Standards for Cathodic Protection (CP) practitioners, this author has concluded that present day CP practitioners, do not have an adequate understanding of some basic scientific principles.

Product Number: 51300-08070-SG
ISBN: 08070 2008 CP
Author: L. A. Bash
Publication Date: 2008
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$20.00
$20.00

Based on some articles 1,2,3,4,5,6,1,8 that have been published in Materials Performance (MP) and the NACE Courses 9 and Standards for Cathodic Protection (CP) 10,11,12,14 practitioners, this author has concluded that present day CP practitioners, in general, do not have an adequate understanding of the basic scientific principles associated with the measurement of the voltage (pipe-te-soil, PIS, potential) between a test lead on a buried steel pipeline and the copper rod in a copper sulfate electrode (CSE) with the CSE wood or ceramic bridge deep enough in the surface of the soil to be in contact with naturally moist soil directly over the pipeline at the test lead. This article presents basic scientific principles from textbooks, valid references and field measurement data in an effort to help promote a better understanding of the basics and to achieve improved CP practices to better serve industry and the public.

Keywords: Equilibrium Potential, Base Potential, Battery Cell, Half-Cell, Linear Polarization, Activation Polarization, Concentration Polarization

Based on some articles 1,2,3,4,5,6,1,8 that have been published in Materials Performance (MP) and the NACE Courses 9 and Standards for Cathodic Protection (CP) 10,11,12,14 practitioners, this author has concluded that present day CP practitioners, in general, do not have an adequate understanding of the basic scientific principles associated with the measurement of the voltage (pipe-te-soil, PIS, potential) between a test lead on a buried steel pipeline and the copper rod in a copper sulfate electrode (CSE) with the CSE wood or ceramic bridge deep enough in the surface of the soil to be in contact with naturally moist soil directly over the pipeline at the test lead. This article presents basic scientific principles from textbooks, valid references and field measurement data in an effort to help promote a better understanding of the basics and to achieve improved CP practices to better serve industry and the public.

Keywords: Equilibrium Potential, Base Potential, Battery Cell, Half-Cell, Linear Polarization, Activation Polarization, Concentration Polarization

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