This paper presents new correlations developed through numerical simulations to estimate peak overpressures for vented methane-air explosions in cylindrical enclosures. This is an abstract of a paper presented at the 2013 AIChE Spring Meeting and 9th Global Congress on Process Safety (San Antonio, TX -). However, the new methodology does not yet reproduce large-scale test data with repeated small obstacles simulating highly congested piping arrays and more work on this issue is necessary. Calculated vent areas using the new method also prevent under-sized vent areas for large enclosures with large equipment representative of many petrochemical process structures. These equations compare favorably with the reference data sets for unobstructed and minimally obstructed enclosures. The 2013 equations are essentially a more transparent casting of the Swift-Epstein-Fauske derivations to provide a framework for including approaches to model flame accelerations and flame wrinkling/stretching in large enclosures with and without internal obstacles. Our product offerings include millions of PowerPoint templates, diagrams, animated 3D characters and more.The 2013 edition of NFPA 68 Standard on Explosion Protection by Deflagration Venting will replace vent area sizing equations containing the gas Deflagration Index, KG, for high-pressure applications with equations containing the laminar burning velocity. is brought to you by CrystalGraphics, the award-winning developer and market-leading publisher of rich-media enhancement products for presentations. Then you can share it with your target audience as well as ’s millions of monthly visitors.
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