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Vulnérabilité des réservoirs aux explosions et aux impacts

Abstract : The occurrence of a chain reaction from blast on atmospheric storage tanks in oil and chemical facilities is difficult to predict. Current French practice for Seveso facilities assumes domino effects occur when the computed overpressure exceeds 200 mbar: a value determined from accident data. This could lead to conservative or dangerous assessments. To assess the validity of simple analytical models as design tools and to check the conformity of numerical simulations, small scale experimental studies were carried out to establish a benchmark. The first study presents blast test results performed on rigid instrumented cylinders to quantify the pressure space time loading distribution. A second study was performed on flexible cylinders at a reduced scale to quantify the structural response. Based on experience of the most recent accidents in France a simplified semianalytical model based on Donnell’s equations and critical imperfection amplification thresholds was used to provide damage predictions. Numerical results show good agreement with the experimental data. Finally, reliable tools to predict atmospheric oil tank blast resistance have been developed. Some damage diagrams in the form of pressure impulse curves and safety recommendations for stakeholders are proposed to reduce domino effect risk.
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https://hal-ineris.archives-ouvertes.fr/ineris-01869421
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  • HAL Id : ineris-01869421, version 1

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Gaëtan Prod’homme, Mathieu Reimeringer. Vulnérabilité des réservoirs aux explosions et aux impacts. Rapport Scientifique INERIS, 2012, 2011-2012, pp.44-45. ⟨ineris-01869421⟩

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