Dense Gas Dispersion and Risk Assessment PDF Download

Author: Envirotech
Publisher: London, Ont. : EnviroTech
ISBN: 9781896401003
Category : Atmospheric diffusion
Languages : en
Pages : 247

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Author: S. Hartwig
Publisher: Springer
ISBN:
Category : Medical
Languages : en
Pages : 406

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Proceedings of the Third Symposium on Heavy Gas and Risk Assessment, Bonn, Wissenschaftszentrum, November 12-13, 1984

Author: R. E. Britter
Publisher: Elsevier Science & Technology
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 264

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Good,No Highlights,No Markup,all pages are intact, Slight Shelfwear,may have the corners slightly dented, may have slight color changes/slightly damaged spine.

Author: S. Hartwig
Publisher: Springer Science & Business Media
ISBN: 9400971516
Category : Technology & Engineering
Languages : en
Pages : 323

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This book comprises the proceedings of the second symposium on heavy gases and risk assessment held in May 1982 at the Battelle-Institut e. V., Frankfurt am Main. The symposium was a se

Author: S. Hartwig
Publisher: Springer
ISBN:
Category : Technology & Engineering
Languages : de
Pages : 324

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Proceedings of a Symposium on Heavy Gas, Frankfurt am Main, September 3-4, 1979

Author: R. E. Britter
Publisher:
ISBN: 9780444412959
Category : Atmospheric diffusion
Languages : en
Pages : 247

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Author: Marc J. Assael
Publisher: CRC Press
ISBN: 1439826765
Category : Science
Languages : en
Pages : 351

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Today's risk analysis is a very challenging field, and a solid understanding of the calculations procedure associated with it is essential for anyone involved. Fires, Explosions, and Toxic Gas Dispersions: Effects Calculation and Risk Analysis provides an overview of the methods used to assess the risk of fires, explosions, and toxic gas dispersion

Author: A.V. Gheorghe
Publisher: Springer Science & Business Media
ISBN: 9401704813
Category : Science
Languages : en
Pages : 332

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Book Description
Over recent years there has been an increasing awareness of the risks of locating hazardous industries near heavily populated, environmentally sensitive areas. This new awareness demands a novel approach to safety planning for hazardous industries; one that looks at the problem from the point of view of integrated regional risk assessment which, besides the risks arising from natural events, should also include the risks arising from the processing plants, storage and the transportation of dangerous goods. Volume I of Integrated Regional Risk Assessment highlights the main procedures for the assessment of risks to health and environmental impacts from continuous emissions of pollutants into air, water and soil under normal operating conditions. Volume II deals with the assessment of consequences of accidental releases, helping to answer such questions as: What can go wrong? What are the effects and consequences? How often will it happen? £/LIST£ The main procedural steps are supported by relevant, internationally recognised methods of risk assessment. The book also reviews criteria and guidelines for the implementation of risk assessment and management at different stages. Audience: Students, engineers, and scientists in charge of developing new methodologies for hazard analysis and risk assessment; practitioners of environmental protection; local and governmental authorities charged with implementing environmental risk impact procedures and guidelines.

Author: Mohamed Amine Chakroun
Publisher:
ISBN:
Category :
Languages : en
Pages :

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The spill of many chemicals such as Liquefied Natural Gas (LNG) on land or water results in its rapid vaporization and the formation of a dense cloud. The performance of a risk assessment for the spill of flammable chemicals requires the determination of the maximum downwind distance where the Lower Flammability limit (LFL) is reached. The modeling of such spills is usually divided in two parts: source term and atmospheric dispersion. The source term describes the cryogenic liquid release rate and conditions. The atmospheric dispersion describes the increasing cloud propagation downwind after the release and the extent of the LFL distance until a steady state is reached. The focus of this work is the preparation of a model for the atmospheric dispersion after the spill of LNG on land using Computational Fluid Dynamics (CFD). CFD is a model based on solving Navier Stokes equations (conservation equations of mass, momentum and energy) in a specific 3D domain. The use of CFD as a tool for the prediction of dense clouds dispersion and LFL distance calculation by industry and research institutions is increasing significantly because it provides an adequate description of the phenomena of dense gas flow, dispersion and it can handle complex geometries. The objective of this research project is to prepare a CFD scheme for vapor cloud dispersion resulting from accidental spill of cryogenic liquid on land using CFD (FLUENT) for medium scale LNG/LN2 spill experiments to be performed at the Ras Laffan Emergency and Safety College (RLESC). The validation of the CFD (FLUENT) model is performed using dense gas dispersion data from literature (Prairie Grass). There is a lack of dense gas dispersion modeling for the unstable class because of the complexity of velocity, temperature and turbulence equations for this class. This model should be able to predict the dense cloud vapors dispersion for different stability classes (neutral, stable and unstable). A crucial parameter in the modelling of the dispersion of the dense gas is the choice of the turbulence model. There is currently no agreement on which model performs better for this application. This work involves a sensitivity analysis of the dispersion results to determine the choice of the turbulence model. The focus will be on three turbulence models which are the most used for this application: standard k - [epsilon], realizable k - [epsilon] and Reynolds Stress Model RSM. The results from the modeling of three sets of Prairie Grass experiments suggest a good agreement between the simulation and experimental results only for the centerline concentration and for the stable and neutral classes. For the unstable class, there is a considerable overprediction of the centerline concentration. This work includes an attempt to compare model predictions with experimental concentrations at each location. Only centerline concentrations or highest concentrations were considered in previous works. Form this comparison; all three models were unable to predict the concentration measurements accurately. The RSM model yields relatively the best results for atmospheric an dispersion modelling compared to the standard k-[epsilon] and realizable k-[epsilon] models. As a result, it is advised to use this model for this application. The electronic version of this dissertation is accessible from http://hdl.handle.net/1969.1/155376

Author: I. G. Lines
Publisher:
ISBN: 9780717618118
Category : Industrial hygiene
Languages : en
Pages :

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