Banca de QUALIFICAÇÃO: MATEUS COSTA MEDEIROS

Uma banca de QUALIFICAÇÃO de DOUTORADO foi cadastrada pelo programa.
STUDENT : MATEUS COSTA MEDEIROS
DATE: 03/12/2024
TIME: 09:00
LOCAL: Auditório do NUPPRAR
TITLE:

APPLICATION OF INACTIVE ANODES IN IMPRESSED CURRENT CATHODIC PROTECTION SYSTEMS

KEY WORDS:

Corrosion, Pipeline sector, Inactive anodes, Oil

PAGES: 37
BIG AREA: Engenharias
AREA: Engenharia Química
SUMMARY:

The pipeline sector generally operates at high pressures and, depending on the substance being transported, the pipelines will be made of welded steel throughout their production chain.For this reason, buried or submerged pipelines will be susceptible to electrochemical corrosion throughout the entire structure, which may be exposed to leaks/bursts and failures.According to NACE, corrosion costs globally represented about 3.4% of the global Gross Domestic Product in 2013, which is equivalent to US$ 2.5 trillion (In this context, an adequate corrosion protection technique can prevent corrosion of these metal pipelines, particularly in hostile environments and corrosive soils. These technologies can reduce pipeline corrosion, leaks, ruptures and failures. In addition, they extend the service life of the installation and improve the transportation process. Click or tap here to insert text.. Among the external corrosion protection techniques most used in pipeline structures are coatings that act as insulation for the pipeline. However, coatings present failures and impressed current cathodic protection (ICCP) systems are hybridized with these technologies to act as corrosion protection. Coatings alone are not fully effective. As a result, both coating and cathodic protection are synergistic and complement each other to prevent external corrosion, especially ifpre-defective areas exist.The application of ICCP is well known in the protection of metal structures.Many anode systems have been investigated for ICCP, including metalized zinc, conductive organic paints, activated titanium mesh and overcoating anodes.However, these anode systems are suffering from durability problems or are very expensive, limiting the wide applications of the ICCP technique.Therefore, the development of alternative anodes for impressed current cathodic protection systems is necessary in order to improve the existing technology that will be fundamental in combating electrochemical corrosion.Furthermore, in case of corrosion of buried or submerged structures, several environmental impacts can be generated to ecosystems, in addition to impacting the supply of chemical products to the entire production chain.

COMMITTEE MEMBERS:
Interna - 2275848 - ELISAMA VIEIRA DOS SANTOS
Interna - ***.673.134-** - JUSSARA CÂMARA CARDOZO - UFRN
Externo ao Programa - 1645110 - CARLOS ALBERTO MARTINEZ HUITLE - UFRNExterno à Instituição - JOSÉ EUDES LIMA SANTOS - IFRN