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Cathodic protection of hot tank bottom tanks requires specific design parameters. This paper presents the design, installation details and commissioning results for two hot sulphur tank cathodic protection using impressed current titanium / Mixed Metal Oxide ribbon anode grid system.
Cathodic Protection System for Hot Sulphur Tank BottomA Cathodic protection system was designed and installed for the external bottom steel surfaces of a hot sulphur storage tank. The impressed current type system comprises a transformer rectifier to provide d.c. current to a grid of conductor bars and mixed metal oxide ribbon anodes installed in the tank foundation between a plastic containment layer and the tank bottom. During service the tank bottom temperature is over 100 degree C and the challenge was to define the right design location and distance of anodes and reference electrode and to specify the right materials to avoid detrimental effects of temperature.This paper presents the design data and the survey results registered during the commissioning of the CP system carried out before and after the filling of the tank.
Keywords: downloadable, Cathodic protection, tank bottoms, anodes, reference electrodes
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.
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An effective and efficient impressed cathodic protection system by laying a continuous shallow anodes bed in close proximity to the tank foundation. Some of the merits of this installation include elimination of shielding effects or interference from other structures and uniform protection of the entire tank bottom.