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Impact of Foam Trench Breakers and Ditch Pads on Pipeline Cathodic Protection

The testing covers the impacts of various commercial Structural polyurethane foam materials on cathodic protection current distribution on coated pipelines based on laboratory testing of key performance parameters.

Product Number: 51317--9002-SG
ISBN: 9002 2017 CP
Author: James Ellor
Publication Date: 2017
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Structural polyurethane foam (SPF) materials are being used to provide physical support (“ditch pads”) and erosion control (“trench breakers”) with pipeline installations. These SPF materials are either sprayed with the pipeline in place or pre-sprayed into a cured shape to support a pipeline. As an organic material that comes into contact with a coated-steel pipeline concerns have been raised about the potential if any for a SPF to create “electrical shielding” and limit or prohibit cathodic protection current from reaching a coating holiday or defect in a coated steel line.The subject paper summarizes the results of research sponsored by the Pipeline Research Council International concerning the subject of shielding. The testing covers the impacts of various commercial SPF materials on cathodic protection current distribution on coated pipelines based on laboratory testing of key performance parameters.

Structural polyurethane foam (SPF) materials are being used to provide physical support (“ditch pads”) and erosion control (“trench breakers”) with pipeline installations. These SPF materials are either sprayed with the pipeline in place or pre-sprayed into a cured shape to support a pipeline. As an organic material that comes into contact with a coated-steel pipeline concerns have been raised about the potential if any for a SPF to create “electrical shielding” and limit or prohibit cathodic protection current from reaching a coating holiday or defect in a coated steel line.The subject paper summarizes the results of research sponsored by the Pipeline Research Council International concerning the subject of shielding. The testing covers the impacts of various commercial SPF materials on cathodic protection current distribution on coated pipelines based on laboratory testing of key performance parameters.

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51315-5780-Cathodic Shielding Effects of In-Trench Pipeline Supports

Product Number: 51315-5780-SG
ISBN: 5780 2015 CP
Author: Daniel Fingas
Publication Date: 2015
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