Keeping the systems and processes safe is of paramount importance for all industries around the world. Process industry is a socio-complex system constituted of dynamic chemical processes, sophisticated computer algorithms, modern human machine interfaces, and teams of operators working at different locations. The decisions of the operators directly or indirectly influence the safety and production of chemical processes. The article presents and discusses a solution for immersive training of industrial operators that allows experiencing the multifaceted scenarios of (real) plant operations. This tool, called Plant Simulator (PS), combines a process simulator and an accident simulator to simulate dynamically both normal and abnormal/accident scenarios. These simulators are the engines that work behind the curtains of an Immersive Virtual Environment and make possible the realism of the simulated operations in the plant. The article explains the features of PS and discusses two case studies that show the potential improvements achievable in processes safety. 9 fatalities and 122 casualties; demolished life in 100-km Marcal river. Neptune Technologies and Bioresources. Sherbrooke, Quebec, Canada (2012); a huge blast followed by smaller ones.2 fatalities and 17 casualties.