LNG dispersion over the sea

Abstract

A numerical study of heavy gas dispersion over sea from an LNG storage facility at Renythousa Island in Greece is examined for the various hazards imposed on the population of the surrounding areas. The study is done by using the code ADREA-HF solving the conservation equations of mass, momentum and energy for the mixture of the heavy gas and air, as well as the mass fraction of heavy gas. Distributions of methane, ethane and propane concentrations for various time instants after the gas release are obtained, identifying the riskiest zones using scenarios based on weather forecast data. Thus the contribution of this work is to show how the available time for the authorities to safely evacuate the nearest affected areas can be evaluated.