Integrity Of Pipelines
Mostrando 1-12 de 16 artigos, teses e dissertações.
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1. The use of Shearography technique to evaluate polymeric composite repairs - case study
ABSTRACT Pipelines are subject to a variety of defects such as wall thickness loss, grooves, dents and holes. To restore the pipe integrity, polymeric composite repairs can be used. The inspection of repaired pipes is of fundamental importance, not only to verify the initial integrity, but also to monitor their state over time. Shearography is a laser optica
Matéria (Rio J.). Publicado em: 09/10/2017
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2. Residual Stress Evaluation by X-Ray Diffraction and Hole-Drilling in an API 5L X70 Steel Pipe Bent by Hot Induction
The API 5L X70 steel is used in high-pressure gas transmission pipelines. Because of this, knowledge of presence of residual stress and their magnitude is important to assess the material integrity in service. For the pipeline manufacturing, tubes need to be curved which is often made using the hot induction bending process. This process can introduce differ
Mat. Res.. Publicado em: 09/09/2016
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3. Microbiologically induced deterioration of concrete: a review
Microbiologically induced deterioration (MID) causes corrosion of concrete by producing acids (including organic and inorganic acids) that degrade concrete components and thus compromise the integrity of sewer pipelines and other structures, creating significant problems worldwide. Understanding of the fundamental corrosion process and the causal agents will
Braz. J. Microbiol.. Publicado em: 04/02/2014
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4. CORROSION FAILURE MANAGEMENT IN PIPELINE / GERENCIAMENTO DE FALHAS POR CORROSÃO EM DUTOS
This work aims to present and compare methodologies used to estimate the corrosion rate from ILI inspection results once this integrity assessment is a procedure employed by pipeline operators. With this purpose the most appropriate methodologies for calculating the corrosion rate were analyzed and compared: Corrosion Rate Estimation based on the Principle o
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 26/04/2012
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5. MONITORING FLEXIBLE RISERS WITH OPTICAL FIBER SENSORS / MONITORAMENTO DE RISERS FLEXÍVEIS COM SENSORES A FIBRA ÓPTICA
The interest in structural health monitoring of flexible risers has grown significantly in recent years. For ducts that are already reaching their design life, monitoring systems can provide early warnings of potential failures and also assist the operator in scheduling downtime. Different techniques are being tested by operators of flexible pipes such as au
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 07/04/2011
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6. Comportamento à fratura de defeitos circunferenciais em dutos submarinos instalados por bobinamento
This study aims to evaluate the limit of the fracture instability for submarine pipelines installed by the Reeling Method, determining the maximum allowable ductile tearing for use in analysis of structural integrity through correlations with SENT specimens (Single Edge Notched Tension). The Standard DNV-RP-F108, which gives guidance to testing and analysis
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 2009
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7. AVALIAÇÃO DE METODOLOGIAS PARA GERENCIAMENTO DA INTEGRIDADE DE DUTOS RÍGIDOS / EVALUATION OF METHODOLOGIES FOR INTEGRITY MANAGEMENT OF RIGID PIPELINES
O mecanismo de falha por corrosão se apresenta, na maioria dos casos, como o fator limitante na operação continuada de um duto. Esse mecanismo reduz a resistência mecânica do duto, aumentando a necessidade de reparos com a conseqüente diminuição da capacidade produtiva. A determinação da resistência remanescente através da aplicação de metodolo
Publicado em: 2009
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8. A methodology for safety verifications and optimum design of pipelines with defects caused by corrosion / Uma metodologia para verificaÃÃo da seguranÃa e dimensionamento Ãtimo de dutos com defeitos causados por corrosÃo
O procedimento mais adequado para verificaÃÃo da seguranÃa de uma estrutura à quantificar a sua probabilidade de falha. A determinaÃÃo deste valor pode ser feita utilizando o mÃtodo de confiabilidade de primeira ordem (FORM), que recai em um problema de otimizaÃÃo para resolver o problema de confiabilidade estrutural. Outra alternativa à aplicar o
Publicado em: 2009
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9. Ferramentas computacionais para a anÃlise de dutos com defeitos de corrosÃo
Pipelines are one of the safest means for transport of petroleum and gas, and the one with the smallest risk to the environment. They also possess high efficiency and productivity. In spite of their exceptional capabilities, they are also a great source of concern of the petroleum companies, since they can be subjected to several types defects, in particular
Publicado em: 2008
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10. CONSIDERATIONS ON THE MODELING OF CONNECTIONS FOR REPAIR OF PIPELINES / CONSIDERAÇÕES SOBRE A MODELAGEM DE CONEXÕES PARA REPARO DE DUTOS
The reduction of pipeline wall thickness caused by corrosion is one of the defects that more affect pipeline structural integrity. These defects can take place in the metal base, in the longitudinal and circumferential welding. With the expansion of the rigid submarine pipelines mesh already installed and considering the advanced time of using, the oil indus
Publicado em: 2008
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11. ANÁLISE DE INTEGRIDADE ESTRUTURAL DE DUTOS COM MOSSAS SIMPLES / STRUCTURAL INTEGRITY OF PLAIN DENTS IN PIPELINES
O presente trabalho analisa o impacto de uma mossa simples transversal na integridade estrutural de espécimes tubulares de paredes finas com dimensões e características semelhantes aos dutos usados para transporte de óleo e gás. O estudo da mossa simples envolveu as etapas de criação, recuperação elástica e avaliação da sua resistência estática
Publicado em: 2007
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12. STRUCTURAL ASSESSMENT OF PIPELINES WITH BLUNT CORROSION DEFECTS COINCIDENT WITH LONG-SEAM WELDS / AVALIAÇÃO ESTRUTURAL DE DUTOS COM DEFEITOS DE CORROSÃO COINCIDENTES COM A SOLDA LONGITUDINAL
One of the most important issues that affects pipeline integrity is corrosion-caused metal loss. This type of defect can occur over the pipe body, seam or girth welds or even on heat affected zones. Pipeline remaining strength criterions are restricted or even prohibited for assessing corrosion defects coincident with weld regions. This present work investig
Publicado em: 2007