Comparison of alternative methods for Operational Risk Assessment

In the MIRMAP project, that was completed earlier this year, an improved method for doing risk analysis to support decision-making in operation was developed. The analysis is focused the activities that are taking place in the plant and how the risk level fluctuates with activity level. The individual activities and how they influence the risk is used as input to the risk model. The Risk Barometer is another approach to calculating risk to provide support to decision-making in operation. This is based on using the existing QRA, carefully selecting relevant parameters from the QRA and updating the risk level based on updated information about these parameters. Both methods are based on using updated information from operation, but there is a difference in the underlying models. The objective of this thesis is to compare these two methods: -Do a literature survey on the topic of dynamic/operational risk analysis to identify important trends and developments in the field. -Study the two methods, MIRMAP and Risk Barometer, and describe these. The methods should also be compared from a theoretical point of view, highlighting similarities and differences in the approaches -Summarize the work and draw conclusions and make recommendations with regard to the two methods, how they can be developed further and their applicability, strengths and weaknesses.