Quantitative Risk Analysis of a Pervaporation Process for Concentrating Hydrogen Peroxide

When a plant is designed, especially when based on a newly developed process, problems and risks that can occur should be predicted and clarified. In addition, impacts and results must be checked in gradual, systematic, and critical positions, and then necessary safety measures should be conducted. In this study, the accident rate of a process for concentrating hydrogen peroxide is predicted by the failure frequencies of the main devices in the process and the PFD (Probability of Failure on Demand) for the IPL (Independent Protection Layer) and the SIF (Safety Instrumented Function). The required SIL (Safety Integrity Level) for the SIF is determined by a given acceptable risk. Based on this approach, a method to improve the safety of the process is proposed. This study is expected to be able to contribute to a methodology for general planning and design to meet efficiency and safety specifications of a process at the same time.