“…Using dynamic simulations, the start-up and shut-down of current processes can also be optimised. In recent years, mathematical modelling has often been used for the purposes of safety analysis (Molnár et al, 2005). European direction 96/82/EC on control of major industrial accidents (so called Seveso II) requires a detailed safety analysis not only for existing industrial units, but also for units (technologies, equipments) which are designed.…”