Key Performance Indicators and Multcriteria Approach for Measuring Safety of Offshore Oil&Gas Facilities

The present work aims to develop a composite indicator which allows quantifying and monitoring over time safety performance of Oil&Gas production facilities located in the Italian seas. The proposed methodology has different phases and starts from the definition of significant risk components and of a logic tree-structure, in order to identify a set of Key Performance Indicators (KPIs), related to the overall safety performance of upstream operations. After the definition of the different KPIs, based on the available data, their aggregation into a single composite indicator was carried out by means of a multicriteria approach. A first set of indicators, presented in this study, is related to the matters concerning the occupational safety, the inherent safety for major accident risks and environmental impact and finally to the monitoring of installations by the Authorities. The proposed methodology shows the opportunity to consider further types of indicators or impact categories, so that the composite indicator can capture all the issues related to the overall safety performance of production Oil&Gas facilities.