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This paper contains a review of commonly used practices and presents a generalized technique for the calculation of earth potentials for the determination of remoteness of impressed current anode ground beds. The intent is to facilitate proper design and evaluation of anode ground beds of impressed current cathodic protection system for cross-country pipelines.
Selection of a remote location of anode ground bed with respect to its cathodic protected pipeline and other underground pipelines / structures is an important element of the design of impressed current cathodic protection systems. Proper understanding of commonly available and used practices is essential for selecting the remote location of impressed current anode ground beds. To facilitate proper design and evaluation of anode ground beds of impressed current cathodic protection system for cross country pipelines, this paper contains comprehensive review of commonly used practices and presents a generalized technique for the calculation of earth potentials for the determination of remoteness of impressed current anode ground beds. Keywords; impressed current cathodic protection, remote anode ground bed, earth potential
Analysis of the Sunde’s equation for multiple electrodes in horizontal configurationsis done in order to show that this equation cannot be used in the case of typical cathodic protection design. An accurate approach to horizontal anode groundbed design and understanding of the theory behind groundbed resistance equations.
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The State of the Art in the technical/scientific knowledge of the subject of AC corrosion on cathodically protected pipelines. Its mitigation, the studies and the issue of relevant Standards & Recommendations will also be dealt with.
Case study for anode grid systems. used for Cathodic Protection of above ground storage tank bottom plates. Technical solutions for arranging the anode grid on large (90 m diameter) tanks are studied and compared in respect to the CP major objective.