Proposta de um sistema de medição de diferença de potencial duto-solo de proteção catódica usando tecnologias de redes sem fio

Abstract

The metallic transport pipelines present in the oil, gas, and sanitation industries are exposed to deterioration, leaks, ruptures, and failures due to corrosion. Cathodic protection is a suitable technique for corrosion protection and aims to avoid the corrosion of these metallic pipelines, particularly in hostile environments and corrosive soils. It can also reduce deterioration, leaks/ruptures, and pipe failures, extend service life, and improve the transportation process. Cathodic protection is widely employed to prevent corrosion in gas and oil pipelines, with pipe-to-soil potential measurement being a critical activity to assess the efficiency of the system. Traditionally, this measurement is performed manually, requiring movement along the entire length of the pipeline, which may be unfeasible in routes reaching dozens of kilometers. requiring movement along the entire length of the pipeline, which may be unfeasible in routes reaching dozens of kilometers. To optimize this process, this work proposes the development of an automated system for measuring the pipe-to-soil potential (On) in cathodic protection systems of terrestrial pipelines, using wireless network technology. The proposal is to develop a cathodic protection transmitter measuring the voltage range (-1.2 to 0.6 V) considering the Cu/CuSO4 reference electrode. Communication between the modules will be implemented to simulate all points of the pipeline, with the data being transmitted to a Supervisory Control and Data Acquisition (SCADA) system, enabling remote and centralized supervision. The proposed system aims not only to reduce the need for manual interventions but also to increase the efficiency, reliability, and frequency of the measurements, contributing to more effective preventive maintenance and the protection of industrial assets.