Risk assessment for installations where liquefied petroleum gas (LPG) is stored in bulk vessels above ground

Abstract This paper describes the current state of development of Quantified Risk Assessment (QRA) methods which will be used by the Health and Safety Executive (HSE) for the risk assessment of installations where LPG is stored in bulk vessels above ground. It describes the models used to calculate the consequences of potential accidents involving fireballs, flash fires, vapour cloud explosions and jet flames. Levels of thermal radiation, blast overpressure and individual risk are calculated and displayed as contours around the installation. If the population distribution around the installation is included, levels of societal risk can also be calculated. The methods used are implemented on interconnecting micro and mainframe computers.