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A review of techniques for the monitoring of cathodic shielding and corrosion under disbonded coatings

Varela,F, Tan,MYJ, Forsyth,M, Hinton,B and Bonar,C 2013, A review of techniques for the monitoring of cathodic shielding and corrosion under disbonded coatings, in Corrosion and Prevention 2013 : Proceedings of the Annual Conference of the Australasian Corrosion Association, Australasian Corrosion Association, [Brisbane, Qld.], pp. 522-530.

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Title A review of techniques for the monitoring of cathodic shielding and corrosion under disbonded coatings
Author(s) Varela,F
Tan,MYJORCID iD for Tan,MYJ orcid.org/0000-0002-0765-108X
Forsyth,MORCID iD for Forsyth,M orcid.org/0000-0002-4273-8105
Hinton,B
Bonar,C
Conference name Australasian Corrosion Association. Conference (2013 : Brisbane, Queensland)
Conference location Brisbane, Queensland
Conference dates 10-13 Nov. 2013
Title of proceedings Corrosion and Prevention 2013 : Proceedings of the Annual Conference of the Australasian Corrosion Association
Editor(s) [Unknown]
Publication date 2013
Conference series Australasian Corrosion Association Conference
Start page 522
End page 530
Total pages 9
Publisher Australasian Corrosion Association
Place of publication [Brisbane, Qld.]
Keyword(s) Cathodic protection
Cathodic shielding
Coating
Corrosion probe
Pipeline
Summary The mitigation of external corrosion of energy pipelines by a combination of barrier coatings and Cathodic Protection (CP) is not always effective. Even when design specifications are properly met, the shielding of cathodic protection current from reaching steel surface by disbonded barrier coatings, often referred to as cathodic shielding, may lead to severe corrosion problems such as deep pitting, high and near neutral pH Stress Corrosion Cracking (SCC) and Microbiologically Induced Corrosion (MIC). Unfortunately, current indirect assessment methods used in the pipeline industry have serious difficulties in detecting such corrosion problems. This paper provides a brief review of current techniques and their limitations when being applied under complex buried pipeline environmental conditions. The main purpose is to identify potential methods that could be utilised in the design of new monitoring probes specific for the monitoring of cathodic shielding and corrosion of disbonded coatings in the pipeline industry.
ISBN 9781634394369
Language eng
Field of Research 030604 Electrochemistry
091207 Metals and Alloy Materials
Socio Economic Objective 870302 Metals (e.g. Composites, Coatings, Bonding)
HERDC Research category E1.1 Full written paper - refereed
Copyright notice ©2013, Australasian Corrosion Association
Free to Read? Yes
Persistent URL http://hdl.handle.net/10536/DRO/DU:30069098

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Every reasonable effort has been made to ensure that permission has been obtained for items included in DRO. If you believe that your rights have been infringed by this repository, please contact drosupport@deakin.edu.au.