Corroded Pipelines
Mostrando 1-4 de 4 artigos, teses e dissertações.
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1. A Comparative Investigation of the Corrosion Resistance and HIC Suceptibility of API 5L X65 and API 5L X80 Steels
High strength low alloy (HSLA) steels are used for the construction of pipelines for oil and natural gas transportation. For such applications pipelines must exhibit mechanical resistance and resistance to corrosion and hydrogen induced cracking (HIC). API 5L X65 steels are the main materials used for this purpose. However, for economic reasons, the use of s
Mat. Res.. Publicado em: 07/01/2019
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2. 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
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3. PERFORMANCE OF IN-LINE INSPECTION TOOLS AND ITS INFLUENCE ON THE STRUCTURAL RELIABILITY OF CORRODED PIPELINE / DESEMPENHO DAS FERRAMENTAS DE INSPEÇÃO EM LINHA E SUA INFLUÊNCIA NA CONFIABILIDADE ESTRUTURAL DE DUTOS CORROÍDOS
This work presents: i) the assessment of in line inspection (ILI) tools performance in the measurement of defects caused by corrosion; ii) differents methods to calculate structural reliability and probability of failure (POF) of corroded pipeline based in the ILI report. The inspection report of the ILI (or instrumented pig) is compared with the the geometr
Publicado em: 2004
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4. Effect of Hydrogenase and Mixed Sulfate-Reducing Bacterial Populations on the Corrosion of Steel
The importance of hydrogenase activity to corrosion of steel was assessed by using mixed populations of sulfate-reducing bacteria isolated from corroded and noncorroded oil pipelines. Biofilms which developed on the steel studs contained detectable numbers of sulfate-reducing bacteria (104 increasing to 107/0.5 cm2). However, the biofilm with active hydrogen