Petrochemical enterprise safety risk grade quantitative evaluation method

The invention relates to a petrochemical enterprise safety risk level quantitative evaluation method, which mainly solves the problem that the actual risk level of each risk event and the overall risklevel cannot be truly quantified in the prior art. According to the petrochemical enterprise safety risk grade quantitative evaluation method, after the accident consequence severity grade and the accident occurrence possibility grade are determined according to accident severity grade division and accident occurrence possibility grade division respectively, the risk grade is determined accordingto the risk grade division; quantitative classification of petrochemical enterprise safety risk levels is achieved through a risk matrix, the levels of the risk matrix are evaluated from the two aspects of the accident occurrence possibility and the consequence severity respectively, and the risk level is comprehensively determined through the matrix according to the evaluation results of the twoaspects. The technical sch