Local multi-risk screening: The application of a semi-quantitative methodology on an Italian case-study

The paper presents a semi-quantitative methodology developed to help Italian local authorities in facing multi-risk aspects inside their Land Use Planning practices. The methodology acts as a pre-screening of natural and industrial risks and their possible interactions, with the aim of better addressing the possible LUP interventions to increase the safety. A quick overview of the methodology is provided, together with a significant Italian case study: a small town affected by both industrial and flood hazard, caused by 'minor elements' not sufficiently analyzed in the sectorial risk plans. The proposed methodology was applied to operate an overall analysis of the risks on the Municipal territory, in order to evidence possible interactions enhancing the dangerousness for the vulnerable elements. The last step of the methodology was to signal further studies and interventions to address critical situations; a dedicated questionnaire was developed to examine in depth the predisposition of industrial plants to cause NaTech events.