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51317-9174-Challenging AC Corrosion Mitigation System for 100-Mile Long Pipeline

Picture for 51317-9174-Challenging AC Corrosion Mitigation System for 100-Mile Long Pipeline
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This paper details a comprehensive AC interference analysis and implementation of an extensive AC corrosion mitigation and monitoring system for a 100-mile (328 kilometer) portion of a regulated pipeline.

Product Number: 51317-9174-SG
Author: Dale Lindemuth, P.E. / Dan Crabtree / Vera Kustova / Sergey Lisovoy
Publication Date: 2017
Industry: Energy Generation
$20.00
$20.00
$20.00

This paper details a comprehensive AC interference analysis and implementation of an extensive AC corrosion mitigation and monitoring system for a 100-mile (328 kilometer) portion of a regulated pipeline. The pipeline is collocated with multiple high voltage overhead AC power lines and countless adjacent pipelines with cathodic protection. It is routed through extensive swamplands and agricultural tracts in highly conductive soils. The field analyses, computer modeling to aid in designing the AC mitigation plan, challenges associated with the phased installation of the mitigation system, and operational performance data are discussed. The threat of AC corrosion was minimized through a combination of parallel mitigation conductors, deep vertical grounds, optimization of the pipeline cathodic protection level to reduce its effect on the AC interference, and remote surveillance of multiple electrical resistance type corrosion rate probes.

Key words: Conference papers, 2017 conference papers, AC interference, mitigation, current density, AC corrosion, electrical resistance corrosion rate probe, cathodic protection, remote monitoring unit.

 

This paper details a comprehensive AC interference analysis and implementation of an extensive AC corrosion mitigation and monitoring system for a 100-mile (328 kilometer) portion of a regulated pipeline. The pipeline is collocated with multiple high voltage overhead AC power lines and countless adjacent pipelines with cathodic protection. It is routed through extensive swamplands and agricultural tracts in highly conductive soils. The field analyses, computer modeling to aid in designing the AC mitigation plan, challenges associated with the phased installation of the mitigation system, and operational performance data are discussed. The threat of AC corrosion was minimized through a combination of parallel mitigation conductors, deep vertical grounds, optimization of the pipeline cathodic protection level to reduce its effect on the AC interference, and remote surveillance of multiple electrical resistance type corrosion rate probes.

Key words: Conference papers, 2017 conference papers, AC interference, mitigation, current density, AC corrosion, electrical resistance corrosion rate probe, cathodic protection, remote monitoring unit.

 

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The AC Close Interval Survey and Other Common AC Measurement Errors

Product Number: 51317--9455-SG
ISBN: 9455 2017 CP
Author: Wolfgang Fieltsch
Publication Date: 2017
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The measurement of induced AC voltages along a pipeline is a primary indicator of electrical safety hazards and AC corrosion risks under operating powerlines. This paper addresses several fallacies, misconceptions and common errors related to the measurement of these AC induced voltages.

 
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AC Interference and Mitigation: Heartland Case Study

Product Number: 51317--9461-SG
ISBN: 9461 2017 CP
Author: Matthew Lechelt
Publication Date: 2017
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Challenges associated with coordinating the modelling, design, and installation of an alternating current interference and mitigation systems. The project consisted of a 65 kilometer long double circuit 500 kilovolt (kV) overhead transmission in a heavily congested right-of-way corridor with more than 80 pipelines.
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Calculating and Tracking Soil Resistivity Change in High AC Corridors

Product Number: 51317--8984-SG
ISBN: 8984 2017 CP
Author: Jamey Hilleary
Publication Date: 2017
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This paper will look a data derived from sites that demonstrate this evaluation of soil resistivity and how this data may be applied in other aspects of cathodic protection and pipeline integrity management.
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