Seismic risk analysis of distribution linear infrastructures

Natural Gas distribution networks are fundamental elements for the socio-economical devel-opment of region and of an entire country. Their vulnerability with respect to the so-called NaTech events can imply significant consequences both in terms of physical damage in the area surrounding the infrastructure and in terms of service interruption, as documented in past earthquakes occurred worldwide. Therefore, perform the seismic risk analysis of this type of infrastructure is essential and matter of interest for identify the most relevant critical issues and avoid dangerous consequences. In particular, this paper will focus on Natural Gas buried pipelines, aiming to propose a framework for the seismic risk assessment of such in-frastructural system. Finally, the procedure is applied to a case study in Italy for highlighting its value and feasibility.