Análise dos processos corrosivos na barragem Capivara em Uiraúna-PB

Abstract

This project presents a study about the corrosive processes present in the Capivara dam, located in Uiraúna-PB, and exposes, in a general way, the corrosion and its means of occurrence, as well as the methods and tactics of prevention/protection, in order to prevent deterioration of materials. In order to do so, the following objectives were set: to identify, analyze and understand the main causes that lead the corrosion processes in the metals, in order to be able to take appropriate corrective measures that could reduce or even eradicate this phenomenon. Data collection will be carried out and will be based on field studies and bibliographical researches. Knowing that approximately 30% of the steel produced in the world is used for the replacement of parts, equipment and installations deteriorated by corrosive processes, the search for the creation or improvement of techniques to reduce these processes is fundamental for humanity. In relation to the Capivara dam, it was sought to visualize and analyze the existence of corrosive processes in its pipelines, pumps, tanks and other equipment / accessories present in the study area. In addition, water samples were collected in different sites of the city of Uiraúna-PB, in order to obtain their physicochemical properties, as well as their influence on the corrosive processes and their quality for consumption of the population of Uiraúna-PB and Surrounding cities, for this purpose, were analyzed through the HORIBA U-50 Multiparameter Probe The following parameters: Temperature, pH, oxi-reduction potential, conductivity, turbidity, dissolved oxygen, total dissolved solids and salinity. Through Photographic Records, it was possible to identify the uniform corrosion as the most common in the object of study. Next comes the corrosion by plates, by pitting and alveolar. The analyses related to pH, potential of oxi-reduction, conductivity and turbidity showed variations that escape the water quality standards established by CONAMA Resolution 357/2005. The advanced occurrence of the phenomenon of corrosion in a material indicates the urgent need for a treatment accompanied by periodic maintenance. It Is important to know all the methods that contribute to the enrichment of the aforementioned theme, therefore, it is essential to study the corrosion and its processes of occurrence.