BREEZE LFG FireRisk Tech Sheet

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Information about BREEZE LFG FireRisk Tech Sheet

Published on June 27, 2016

Author: BREEZESoftware

Source: slideshare.net

1. LFG Fire/Risk Predict the potential risks of fires and explosions associated with liquefied fuel gas (LFG), including liquefied natural gas (LNG), with the integrated BREEZE LFG Fire/Risk software suite. Regulations require that LNG facilities use specific approved models to predict the vaporization rate and downwind vapor concentrations for explosion hazards. BREEZE LFG Fire/Risk streamlines the process with an integrated application that includes the required models and displays the results in easy-to-read tabular and graphical forms. It includes the Gas Technology Institute (GTI)’s LNG Fire3 model and four additional fire models. BREEZE LFG Fire/Risk is easy to use and quick to run. The intuitive interface guides the user through entering required and optional inputs and selecting the appropriate algorithms. With LFG Fire/Risk, EH&S professionals can efficiently analyze the risks from a vessel/pipeline failure as required for regulatory compliance and safe operations. Approved LFG Vaporization Model LFG Fire/Risk uses the Source5 model developed by the GTI, formerly the Gas Research Institute, to predict the LFG vaporization rate from instantaneous spills and continuous leaks over land or water. It also allows the user to specify: n Rupture characteristics – size and position n Impoundment basin (dike) – size, shape, and composition material n LFG tank – size, volume, and platform View plume centerline concentrations at downwind distances Display plume centerline cross-section Visualize hazard areas with integrated GIS View tabular display of input and output files Approved Dense Gas Model Federal Safety Standards for Liquefied Natural Gas Facilities (49 CFR Part 193) require the use of the DEGADIS dense gas dispersion model to predict downwind vapor concentrations for explosion hazards. DEGADIS has the unique capacity to model both ground level and vertical jet releases and can account for transient releases where the emission rate and source dimensions vary with time. LNG Regulations Requiring Modeling n Federal Safety Standards for Liquefied Natural Gas Facilities (49 CFR Part 193) n Waterfront Facilities Handling Liquefied Natural Gas and Liquefied Hazardous Gas (33 CFR Part 127) n Standard for the Production, Storage, and Handling of Liquefied Natural Gas (LNG) (NFPA 59A)

2. BREEZE is a registered trademark of Trinity Consultants Incorporated. AutoCAD is a registered trademark of Autodesk Incorporated. Microsoft, Encarta, MSN, and Windows are either registered trademarks or trademarks of Microsoft Corporation in the United States and/or other countries. Copyright 2015. All rights reserved. Thermal Radiation In addition to vapor concentration hazards, four integrated fire models allow the user to calculate thermal radiation flux associated with a potential explosion and fire. Confined Pool Fire—models fires that occur when liquid is ignited in a confined area such as a dike. The model calculates the distance to user-specified thermal radiation levels and the dynamic temperature rise of a nearby target. Unconfined Pool Fire—models fires that occur when an unconfined spreading pool of liquefied fuel gas ignites. The model calculates the distance to user-specified thermal radiation levels and the thermal radiation flux as a function of time at a given distance as the pool spreads. Jet Fire—models fires that result from the leak or rupture of a pipeline containing a compressed or liquefied gas under pressure. The model calculates the distance to user-specified thermal radiation levels and the dimensions of a high velocity jet flame ensuing from a ruptured pipeline. BLEVE—when a vessel containing flammable material ruptures, creating a boiling liquid expanding vapor explosion (BLEVE), a fireball can result. Based on the Hymes point-source model, BLEVE models the heat radiation from the fireball. Integrated Tools BREEZE LFG Fire/Risk helps you to improve risk manage- ment practices and site planning with these additional capabilities: Receptor Analysis—Calculate the concentration time-history at single or multiple receptor locations. Parametric Analysis—Visualize how variations in input parameters will affect the plume dispersion in DEGADIS. User Features n Importation of AutoCAD® .DXF, Windows® .BMP files, and .JPG files n Instant visualization of model results: 2-D contour plots, charts, and text summary reports n Scenario management for developing “what-if” scenarios involving specific meteorological conditions and source parameters n Customizable display and toolbars n Online documentation, sample applications, and technical appendices n Windows Explorer-type interface n Compatible with Microsoft® Excel cut/paste options n GIS Interface Select built-in chemical properties or specify a mixture +1 (972) 661-8881 n Fax: +1 (972) 385-9203 breeze-software.com breeze@trinityconsultants.com

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