Análise de falha e gerenciamento de riscos associados aos dutos de gás natural à alta pressão

• Ano de defesa: 2011
• Autor(a) principal: Almeida, Jerfson Pereira de
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Federal do Espírito Santo; BR; Mestrado em Engenharia Mecânica; Centro Tecnológico; UFES; Programa de Pós-Graduação em Engenharia Mecânica
• Palavras-chave em Português: Fatigue failure and corrosion risk area; Length fatal; Natural gas; Pipeline risk management; Falha por fadiga e corrosão; Área de risco; Comprimento fatal; Gás natural; Gasoduto; Gerenciamento de riscos; Engenharia Mecânica; 621
• Link de acesso: http://repositorio.ufes.br/handle/10/4159

The failure of a natural gas pipeline could bring harm to many people and properties near the site of the same. The area of risk associated with the damage will depend on the failure mode of the pipe, ignition timing, environmental conditions at the point of failure and weather conditions. Some failures are independent of time such as third-party interference, earthquakes, over-pressure, etc. Other failures are time dependent, such as corrosion and fatigue failure. The management of gas transportation through pipelines shows that the failure rate varies significantly with the design factors, conditions of construction, maintenance techniques and environmental situations. The quantitative risk assessment has become important for controlling the level of actual danger of the pipeline. This paper proposes an approach to mechanical failures in pipes, as well as their analysis when dealing with fatigue and corrosion. Results are presented for reference beam to the area where the risk of death is imminent, a simple method of quantitative evaluation of it shows through the engineering data such as operating pressure, pipe geometry, diameter of the hole through which the gas escapes and population density of Geographic Information Systems, the results of risk for radius, length fatal and fatal accumulated length that serve as the basic parameters for decisions regarding the management of the factors associated with the disaster. The methodology presented turns out to be a good choice to be applied in managing risks associated with the transport of gas through pipelines.