A general method to combine environmental and life-safety consequences of Arctic ship accidents

Risk aggregation is the process of combining multiple individual risks to develop a better understanding overall risk on system. Different can have different consequences and units measure. This study contributes by presenting general method combine posed an Arctic ship accident. The considers ecological socio-economic potential oil spill, life-safety evacuation. Existing models for each consequence type are adopted. Individual types monetized combined quantify total cost given accident scenario. A framework proposed assign qualitative rating severity. scales established using quantitative method. Total severity evaluated regions in Canadian Arctic. Results indicate that accidents involving tankers environmentally sensitive cruise ships associated with long response times worst-case scenarios, similar levels. Implications safe shipping basis severity, mitigating operations near equal priority tanker operations. Evaluating provides decision-makers analysts data-driven tool integrate multidisciplinary knowledge assessment, management, communication risks.