a) Describe the steps performed in a traditional Norwegian offshore quantitative risk analysis (QRA) based on the Norsok Z-013 standard in order to calculate the potential loss of life (PLL). The discussion should be limited to personnel risk from ignited gas release in the process area.
Headlines (steps) to be used in the description: - Hazard identification - Leak frequency - Gas dispersion - Ignition potential - Fire modelling - Explosion modelling - Modelling of accident sequences - Fatality calculations (PLL)
Materials ; Task 1: Flage, R. and Aven, T. (2009) Expressing and communicating uncertainty in relation to quantitative risk analysis. Reliability & Risk Analysis: Theory & Application, 2(2), 918
b) Discuss the strength of the background knowledge in each of the steps described in a) by evaluating the following: - Validity of assumptions - Level of understanding of relevant phenomena - Availability of data - Level of agreement/consensus among experts