Evaluation and characterisation of the condition of individual components of cathodic protection systems

doi:10.1108/00035590410541319

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Anti-Corrosion Methods and Materials

ISSN: 0003-5599

Online from: 1954

Subject Area: Mechanical & Materials Engineering

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Evaluation and characterisation of the condition of individual components of cathodic protection systems

Document Information:
Title:	Evaluation and characterisation of the condition of individual components of cathodic protection systems
Author(s):	Krzysztof Zakowski, (Department of Electrochemistry, Corrosion and Materials Engineering, Faculty of Chemistry, Gdansk University of Technology, Poland), Kazimierz Darowicki, (Department of Electrochemistry, Corrosion and Materials Engineering, Faculty of Chemistry, Gdansk University of Technology, Poland)
Citation:	Krzysztof Zakowski, Kazimierz Darowicki, (2004) "Evaluation and characterisation of the condition of individual components of cathodic protection systems", Anti-Corrosion Methods and Materials, Vol. 51 Iss: 4, pp.253 - 258
Keywords:	Cathodic protection, Liquefied petroleum gas, Underground corrosion
Article type:	Research paper
DOI:	10.1108/00035590410541319 (Permanent URL)
Publisher:	Emerald Group Publishing Limited
Abstract:	Results of investigations on a working cathodic protection installation of two underground LPG tanks are presented. The efficiency of anodes and buried reference electrodes were evaluated using electrochemical impedance measurements. On the basis of the impedance spectra obtained it can be shown how one of the anodes attached to the long anode line works inefficiently. In addition, the potential distribution map for the protected tanks is presented. On the basis of this information, an electric connection was revealed from the tanks to the neighbouring reinforced concrete structures, this being inconsistent with the technical guidelines for the cathodic protection installation. The inspection performed on the installation yielded some recommendations concerning the operational parameters and the identification and replacement of defective components.