Abstract
Chemical reactive hazard is one of the main causes for accidents in chemical production, inherent safety indexing methodology is considered the most effective method for reactive hazard evaluation. Traditional reactive inherent safety indices often neglect pressure-related risks in runaway scenarios. This work introduced a chemical reactive risk index (CRRI), filling the gap in pressure risk assessment. CRRI integrates a semi-quantitative method based on risk analysis principles, consisting of the probability of reaction runaway and the severity of its consequences. The consequence of the whole runaway process is evaluated, and the severity of thermal and pressure effects are considered comprehensively. The PVA, TBHP and PFA production processes are utilized as case studies to demonstrate the application process and evaluation effectiveness of CRRI. The results illustrate the superiority of CRRI in comprehensive assessment of reaction risks, indicating CRRI as a reliable safety assessment tool for chemical reactions, helping to select inherently safer reaction processes.
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