Review of “an approach to hazard analysis of LNG spills”

Abstract

Although trade in LNG has not increased at the rate of earlier forecasts it has been necessary to realistically assess risk. The aim of the original paper was to outline an approach to such risk assessment. Methods of assessment recommended in 1985 have been improved. This applies to both modelling of flames and marginally to the dispersion of gases. Further with more records of experience with LNG values of frequency of some failure events have changed slightly. However it is shown that the basic features of the original paper remain appropriate and applicable. LNG trade continues to increase. Methods of liquefaction, handling, transportation and evaporation have been developed and improved but there is no fundamental change in technology. The basic method of hazard analysis and risk assessment (HARA) remain unchanged. Attention is drawn to one major development. Since 1985 HARA have become requirements in a number of jurisdictions, while in others they are prominent features in project assessment. In reviewing the original paper it is concluded that the aims and objectives were correct and they remain eminently appropriate. With present and proposed LNG projects, the application of the methodology outlined will be at an accelerating rate.