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51316-7153-Degradation of FBE Coating on Pipelines in the Presence of Alternating Current Interference

Picture for Degradation of FBE Coating on Pipelines in the Presence of Alternating Current Interference
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Product Number: 51316-7153-SG
ISBN: 7153 2016 CP
Author: Frank Cheng
Publication Date: 2016
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$20.00
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Buried pipelines are protected from external corrosion attack by coating and cathodic protection (CP). When the pipeline is adjacent to the high-voltage power transmission lines it would experienceaccelerated corrosion and reduced CP effectiveness due to the alternating current (AC) interference. There have been extensive works conducted to study AC corrosion of pipelines and the new CP design. However there has been limited work to investigate the effect of AC on coating properties and its performance degradation.In this work the effect of AC on the properties and performance of a fusion bonded epoxy (FBE) coating was studied in a simulated soil solution. Fourier Transform-Infrared Spectroscopy (FT-IR) was used to characterize the structures of the coating that is under various AC current densities. At the same time the water uptaking ionic permeation adhesion and corrosion resistance of the coating upon AC applicationwere studied by a combination of surface analysis techniques such as scanning electron microscope and atomic force microscope and electrochemical impedance measurements. It is anticipated that a complete understanding of the effect of AC interference on coating performance and thus the pipeline corrosion protection is developed.
Buried pipelines are protected from external corrosion attack by coating and cathodic protection (CP). When the pipeline is adjacent to the high-voltage power transmission lines it would experienceaccelerated corrosion and reduced CP effectiveness due to the alternating current (AC) interference. There have been extensive works conducted to study AC corrosion of pipelines and the new CP design. However there has been limited work to investigate the effect of AC on coating properties and its performance degradation.In this work the effect of AC on the properties and performance of a fusion bonded epoxy (FBE) coating was studied in a simulated soil solution. Fourier Transform-Infrared Spectroscopy (FT-IR) was used to characterize the structures of the coating that is under various AC current densities. At the same time the water uptaking ionic permeation adhesion and corrosion resistance of the coating upon AC applicationwere studied by a combination of surface analysis techniques such as scanning electron microscope and atomic force microscope and electrochemical impedance measurements. It is anticipated that a complete understanding of the effect of AC interference on coating performance and thus the pipeline corrosion protection is developed.
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Fusion Bonded Epoxy Coatings (FBE) and Disbondment

Product Number: 51316-7246-SG
ISBN: 7246 2016 CP
Author: Mehrooz Zamanzadeh
Publication Date: 2016
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In this paper, failure analysis methodology will be applied to the principal mechanisms by which FBE coatings fail during long term service; with specific application to case studies involving blistering. The case studies apply standard failure analysis techniques to determine the primary causes and modes of failures.
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51312-01298-Non-Osmotic Blistering Mechanism in FBE Coatings

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Picture of 51316-7024-High Temperature FBE Coating Disbondment in Multi-Layer PP Insulation Coatings
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51316-7024-High Temperature FBE Coating Disbondment in Multi-Layer PP Insulation Coatings

Product Number: 51316-7024-SG
ISBN: 7024 2016 CP
Author: Alex Garner
Publication Date: 2016
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Multi-layer polypropylene (MLPP) insulation coating is used for thermal insulation of subsea pipelines.  However in recent years - with higher wellhead operating temperatures - high temperature (HT) Fusion Bonded Epoxies have been used. This paper describes the author's experience with the MLPP systems over the last 20 years.
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