Mitigation barriers for domino effect

Abstract This chapter provides a detailed analysis of the safety barriers and systems aimed controlling and/or mitigating risks due to domino effect. A preliminary conceptualization of safety barriers, layered protection, and safety functions is provided, in order to identify and select a reference framework for the description and analysis of safety barriers working principles. In particular, the analysis focuses on inherent, passive, active, and procedural emergency measures. Advantages and limitation of the more commonly applied solutions in industrial contexts are detailed, reporting specific examples for the prevention and mitigation of domino effects triggered by fire heat radiation exposure, explosion overpressure, and fragments projection. Finally, the examination of managerial aspects is carried out, in order to show the necessary policies, strategies, and resources aimed at ensuring the effective performance of safety barriers.