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Use of Corrosion Rate Probes to Evaluate Pipeline Cathodic Protection Performance

A natural gas transmission pipeline is routed through South Texas where cathodic protection levels can vary significantly throughout the year.  This paper discusses the use of precision electrical resistance type corrosion rate probes and remote monitoring of the probe corrosion rate.

Product Number: 51317--9180-SG
ISBN: 9180 2017 CP
Author: Vera Kustova
Publication Date: 2017
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$20.00
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The natural gas transmission pipelines that are the subject of this paper are routed through South Texas where cathodic protection levels can vary significantly throughout the year based on soil moisture. Recurrent pipe-to-soil potential measurements indicating possible ineffective corrosion control prompted further assessment relative to pipeline integrity management and regulatory compliance. This paper discusses the use of multiple high-precision electrical resistance type corrosion rate probes and continuous remote monitoring of the probe corrosion rate in conjunction with various channels of electrical data to determine/document conditions and establish a suitable path forward.

Key Words: Cathodic protection, low pipe-to-soil potentials, dry soil, ER corrosion rate probes, remote monitoring.

The natural gas transmission pipelines that are the subject of this paper are routed through South Texas where cathodic protection levels can vary significantly throughout the year based on soil moisture. Recurrent pipe-to-soil potential measurements indicating possible ineffective corrosion control prompted further assessment relative to pipeline integrity management and regulatory compliance. This paper discusses the use of multiple high-precision electrical resistance type corrosion rate probes and continuous remote monitoring of the probe corrosion rate in conjunction with various channels of electrical data to determine/document conditions and establish a suitable path forward.

Key Words: Cathodic protection, low pipe-to-soil potentials, dry soil, ER corrosion rate probes, remote monitoring.

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