关键词: 定量风险评价, 个人风险, 社会风险

Abstract: This paper presents the general procedure, core index and risk benchmark value of quantitative riskanalysis (QRA). Taking the ethylene project planned and constructed by an enterprise as an example, equipment and facilities with high temperature and pressure and flammable and explosive medium are selected in the analysis unit with high risk after hazard identification, and risk calculation is carried out by using DNV SAFETI quantitative risk analysis software. According to the relevant standards of risk benchmark published by the state, personal risk calculated by the project has no sensitive places and protection targets within the ranges of 1×10-5, 3×10-6 and 3×10-7, and the calculated social risk part is in the area of the lowest possible level. The enterprise may take measures such as optimizing process technology, strengthening safety management, increasing relevant education and training to minimize project risks.

Key words: quantitative risk analysis/QRA, personal risk, social risk