Comparison and Effective Approaches for Quantitative Risk Assessment (QRA) Oil & Gas Offshore Installation

Abstract

The methods to determine Quantitative Risk Assessment (QRA) used in Malaysia are different amongst industries, consultants & asset facilities within various practitioners have slightly cause different QRA results. The differences concern both ways of the calculations are performed and the consequences calculated (such as deaths). Despite the differences, the methods yield similar results in terms of the safety distances. There has been increasing interest in using oil & gas QRA offshore installation to help improve the primary objectives of QRA. In Malaysia oil & gas, chemical process and petrochemical industries are primarily concerned with determining in term of "individual". Individual Risk Per Annum (IRPA) or "societal" Location-Specific Individual Risk (LSIR) cause by indesired events. Specialist software can also be used to model the effects of such an event, and to help calculate  the pontential loss of life.QRA for offshore oil and gas installations is supported by the Centre for Marine and Petroleum Technology (CMPT) guide. This guidance focuses on estimating risk for specific scenarios such as blowouts, leaks, fires and evacuations. Following high-quality guidance material is likely to result in higher-quality instances of QRA. However, complying with guidance is not in itself sufficient to ensure that a QRA is free of major gaps. The paper provides a constructive way forward model for assessing and improving QRA. In order to qualify for a given level, a QRA process and report must be free of the gaps in all levels. This paper has proposed a model which indirectly provides a roadmap for organizations to develop & improvise offshore oil& gas QRA practices. The paper highlighted about the how safety practitioners to improve their QRA practice and justifies allocation of resources. QRA should has an important role to play in system safety engineering, but to realize its benefit it needs to be conducted effectively and appropriately