196,001 research outputs found

    Failure analysis of an old oil pipeline

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    Following the collapse of a section of a steel oil pipeline during its return to service after maintenance work, an analysis was made of the section itself and its fracture site. Chemical examination showed that the steel was too sensitive to brittle fracture and not suitable for this application. Investigation of the crack showed that the collapse was caused by a pressure surge which resulted in a brittle fracture at an already defective point. The question of the environmental safety of this pipeline and whether it could be improved is also discussed

    Analytical approach to geomorphological analysis, estimation of debris potential and hydraulic infrastructures in the Torrente Gravio basin (Susa Valley)

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    The study concerns the analysis of a mountain basin (Torrente Gravio, Susa Valley, Turin) from a geomorphological point of view, aimed to estimate the debris potential in order to assess suitability and current conditions of existing hydraulic infrastructures and to propose needed action. The methodological approach followed represents an example of an analysis that takes into consideration several elements: the climatic analysis, the historical research, the geomorphological analysis, the estimation of debris potential through an analytical procedure and, lastly, a critical analysis of existing and/or suggested hydraulic infrastructures based on other achieved results
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