Optimization of three-echelon inventory project for equipment spare parts based on system support degree

Management of three-echelon maintenance and supply is a common support mode,in which the spare parts inventory project is one of the critical factors for system availability.Focus on the actual problem of the equipment support engineering,the system spare parts are divided into two levels,and based on the METRIC theory,the three-echelon support evaluation model for system spare parts is established. The three-echelon system support degree is used as the optimization target while the cost is taken as the restriction,and the margin analysis method is applied to inventory project optimization.In a given example,the optimal inventory project and the distribution rule for spare parts is got,and the influencing factors for spare parts inventory is analyzed.The optimization result is consistent with the basic principle under the three-echelon support pattern,which can supply decision assistance for equipment support personal to design a reasonable project.