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Comparing AC Study Techniques In Addressing AC Corrosion Risk

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AC interference studies have become increasingly popular in an industry where shared right of ways have increased and there has been a better understanding of how AC interacts between pipelines and powerlines that are collocated with each other. While modeling software for AC interference studies have been developed since the 1990s, advancement in AC interference processes have occurred as more has been learned over the years. When performing an AC interference study there are three steps that need to be completed: field data collection, modeling, and mitigation design. Within this paper, we can compare a project from ten years ago to a project from today to understand the developments that have been made over the course of time to improve the way we develop our mitigation designs.

Product Number: 51322-17735-SG
Author: Perry Ross
Publication Date: 2022
Industries: Electric , Cathodic Protection , Corrosion Monitoring and Control
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An AC study and mitigation design was performed and installed to address corrosion risks. After a few years of operation, the site was revisited due to changing conditions and increasing AC current densities. For the second evaluation, new modeling software was used to evaluate the risk. This paper is a case study comparing the two modeling software techniques, and evaluation on the impact of the field data quality, and a lesson learned on addressing AC corrosion risk.

An AC study and mitigation design was performed and installed to address corrosion risks. After a few years of operation, the site was revisited due to changing conditions and increasing AC current densities. For the second evaluation, new modeling software was used to evaluate the risk. This paper is a case study comparing the two modeling software techniques, and evaluation on the impact of the field data quality, and a lesson learned on addressing AC corrosion risk.

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