The similarities and differences of

The similarities and differences of the evaluation system, the similarities and differences of the selection methods of the safety evaluation system, and the similarities and differences in the selection process of the safety evaluation system method. In general, the safety assessment system method can be selected according to the steps shown. In the selection of system safety assessment method, first of all, it is necessary to make a detailed analysis of the evaluated system, and clearly achieve the goal through the safety assessment system, that is, what kind of safety system assessment results are given through the safety assessment system; then, as much as possible to collect the safety evaluation system methods; classify and classify the safety evaluation system methods; and clarify the safety evaluation system According to the objectives of the safety assessment system and the basic data and process information required, the applicable safety assessment system method is selected.