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Mathematical modelling of cathodic protection anode currents - comparison with classical equations, and the impact of interference effects for anode sleds

J M W Baynham, T M Froome

Anode sledJohn Baynham presented results of investigations into resistance to ground of various anodes and groups of anodes. He compared resistance values determined using analytic and approximate formulae and using simulation. Single anodes considered included cylindrical ground rods, cuboid shapes and cylindrical anodes with large diameter. Combinations of anodes included some for which published results are available, and others typical of anode sleds used by the industry. Assessment of results demonstrated
the appropriateness of the formulae and tabulated data regularly used by CP Designers.

Anode sled potentials

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