ALARP Principles & Guidelines

Risk reduction measures are required to be demonstrated in safety case as per Singapore WSH (MHI) Regulations. One of the key components of Safety Case is to demonstrate risk reduction to ALARP level by adopting and implementing control measures. Therefore, there is a need to understand the use of these principles with respect to the level of uncertainty and on the risk criteria. In this case-study led workshop, delegates will be taught on the key concepts, and approaches taken to demonstrate or provide evidence on ALARP. The idea behind ALARP is to demonstrate risk reductions in MHI based on reasonable practicability and gross disproportion, which is a balancing act between cost and risk. As far as the application of numerical risk criteria is concerned, it is not always correct and thus the demonstration of ALARP and the usage of risk criteria should be justified based on the categorization of risk which may be either qualitative, semi-quantitative, or quantitative. Many Countries regulate Major Hazard sites using a safety case regime based on a risk-based approach to process safety; Singapore is rolling out such a regime as mentioned.