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Title: Vapor Fences For LNG Vapor Dispersion Control
Author: Steve J. Wiersma, Ted A. Williams
Source: American Gas Association 1990
Year Published: 1990
Abstract: Dispersion of LNG vapor in the event of an accidental spill is a major concern in LNG storage safety planning, hazard response, and facility siting. This paper addresses the potential effectiveness of solid vapor fences as a means of reducing downwind dispersion distances of flammable concentrations of LNG vapor at ground level. Observations are based on a series of large-scale field experiments performed at the US. Department of Energys Liquefied Gaseous Fuels Spill Test Facility in 1987 and computer simulations of the spills using the FEM3A threedimensional computer mode! developed by Lawrence Livermore National Laboratory. The tests and analyses show that vapor fences can significantly reduce downwind dispersion distances of flammable vapor clouds. Results and conclusions presented by this paper augment earlier analyses of vapor-fence effectiveness published by GRI and others.

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