We conduct extensive safety and risk analyses of plants from the design stage through to commissioning to ensure their safety. Analyses follow a two-stage system. First, our experts model what could happen (e.g. an explosion or a chemical spill) at any particular plant, clarifying the potential causes and developing preventive measures. Second, we examine especially critical plants for potential error sources, evaluating the resultant risks according to the following criteria: impact, the likelihood of someone being in the danger zone, estimated probability of occurrence and the potential for a timely emergency response. Having classed the risks, we then determine the quality of the protective measures needed.