Estudo teórico da proteção catódica de estrutura metálica flutuanfe de captação de água. Estudo de caso: Açude Gavião

Abstract

In the process of management of water resources are floating metal structures, installed inside the weir, which are intended for the abstraction of water supply for cities and industries, such structures are subject to processes of oxidation of his submerged structure may jeopardize the supply of units. This corrosion can be fully controlled through the use of the method of protection catódica, which is made a difference in potential between the structure to be protected and other material of lesser economic value called anodo of sacrifice. This difference is emerging potential of an electric current of meaning directing ordered to wear other material benefit in the important structure to be protected. This work will be presented, as an example, the study in the structure of metal floating abstraction of water from the Açude Gavião, where it will be shown that the structure is suffering from metal corrosion process and where it is necessary to intervene to stop the corrosion that it is suffering. The choice will be made between one of the methods of protection catódica, realizing its design and its estimated useful life, carrying out a comparative technical / economical between the forms of protection.