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98735 EXPERIENCES IN RETROFITTING SACRIFICIAL ANODES IN OFFSHORE ARABIAN GULF

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Product Number: 51300-98735-SG
ISBN: 98735 1998 CP
Author: Joseph H. Kiefer, William H. Thomason, Nasser G. Alansari
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An analysis was made of the cathodic protection systems of ftieen (15) fixed offshore platforms. These steel template structures are located in the warm waters off the coast of the United Arab Emirates with water depth varying between 125 and 185 feet. The operator employs a systematic survey program to monitor the corrosion protection systems including the assessment of sacti]cial anode depletion, and measurement of the anode and platform potentials. These data are used to design new anode retrofits for the older structures to extend the life of the CP systems. This paper presents an analysis of the field survey measurements, the method used to evaluate when new anodes are required, how many are needed, and where to locate retrofit anodes. Keywords: cathodic protection, polarization resistance, retrofit, survey data, sacrificial anode, offshore structures
An analysis was made of the cathodic protection systems of ftieen (15) fixed offshore platforms. These steel template structures are located in the warm waters off the coast of the United Arab Emirates with water depth varying between 125 and 185 feet. The operator employs a systematic survey program to monitor the corrosion protection systems including the assessment of sacti]cial anode depletion, and measurement of the anode and platform potentials. These data are used to design new anode retrofits for the older structures to extend the life of the CP systems. This paper presents an analysis of the field survey measurements, the method used to evaluate when new anodes are required, how many are needed, and where to locate retrofit anodes. Keywords: cathodic protection, polarization resistance, retrofit, survey data, sacrificial anode, offshore structures
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