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09547 Dynamic Stray Current Interference Testing and Mitigation Design for a 90" Water Main

Picture for 09547 Dynamic Stray Current Interference Testing and Mitigation Design for a 90" Water Main
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Product Number: 51300-09547-SG
ISBN: 09547 2009 CP
Author: Ron Turner, Rogelio De las Casas and Kristi Roe
Publication Date: 2009
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A large number of pipelines are routed around or through the Chicago metropolitan region of Illinois. Pipeline operators are faced with operational and maintenance challenges that include the mitigation of static and dynamic stray current interference. This interference is generated by D.C. current sources which can include foreign pipelines and DC electric rail systems. In the Chicago area, the Chicago Transit Authority (CTA) railway system is one of the sources of dynamic DC stray current that can affect pipeline operators.

Preliminary testing conducted on a local 90-inch water transmission pipeline was observed to indicate the presence of dynamic stray current interference. Based on this preliminary testing, more advanced testing was initiated. Ultimately this activity lead to design services to address and mitigate the DC stray current found on this water transmission pipeline.

Field testing and analysis, calculations and the final mitigation design are presented in this paper.
A large number of pipelines are routed around or through the Chicago metropolitan region of Illinois. Pipeline operators are faced with operational and maintenance challenges that include the mitigation of static and dynamic stray current interference. This interference is generated by D.C. current sources which can include foreign pipelines and DC electric rail systems. In the Chicago area, the Chicago Transit Authority (CTA) railway system is one of the sources of dynamic DC stray current that can affect pipeline operators.

Preliminary testing conducted on a local 90-inch water transmission pipeline was observed to indicate the presence of dynamic stray current interference. Based on this preliminary testing, more advanced testing was initiated. Ultimately this activity lead to design services to address and mitigate the DC stray current found on this water transmission pipeline.

Field testing and analysis, calculations and the final mitigation design are presented in this paper.
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