Risk based design of allyl chloride production plant

The necessity to identify and quantify the risks for men and the environment, but also the excessive consumption of resources and energy related to the process plants has led to the formulation of analytical methods capable of assessing the reliability and availability of these systems in order to optimize their operation. Integrated Dynamic Decision Analysis (T.D.D.A.), in particular, represents a tool for the logic modeling of the process plants based on "dynamic" event trees able to describe the system both as "logic" concatenation of events and "probabilistic" coherence. This approach was used for reviewing the design of a plant for the production of allyl chloride by chlorination of propylene in exothermic conditions. This paper aims at building an objective and documented reference for the decision making about the design altrenatives to be adopted for risk minimization