本文基于风险的最大可能损失和可能最大损失两点的值,提出一种更好描述和评价化工厂火灾风险的模型。运用RAC矩阵对两点进行评价,同时考虑两点之间的关系,增加一个关系参数。在已知两点和变化趋势的条件下绘制风险曲线,并对其风险区域进行分析。从而得出了一个以最大可能损失和可能最大损失值为基础的评价模型。 Based on the two values ​​of the maximum possible loss and the maximum possible loss, this paper presents a model that better describes and evaluates the fire risks of chemical plants. Use the RAC matrix to evaluate two points, taking into account the relationship between the two points and add a relationship parameter. Draw a risk curve with two known points and trends, and analyze the risk area. This leads to an evaluation model based on the maximum possible loss and the maximum possible loss.