Research on Risk Probability and Economic Safety Assessment Method and Application of Mechanical System

Form human-machine-environment, this paper analyzed the factor of risk assessment, and proposed how to calculate the failure probability of basic event including the human factor and the mechanical device. The accident serious degree was changed into the economic losses by the view of safety economics. Integrating the failure probability and the economic losses to determine the risk assessment items, system rank was evaluated by checking assessment items. After establishing the quantitative risk probability and economic risk assessment method, the example about crane travel mechanism was given to demonstrate the method correct and feasible.