The Joint Optimization of Spare Parts and Maintenance Personel Under Lateral Transshipment

This paper proposes an optimization approach to plan the maintenance personnel and spare parts in a multiple echelon stocking system. In this system, for each failure requested by group p epsilon P-j, if the jth local warehouse has available inventory, maintenance personnel with a spare part will be supplied by it, otherwise, the resources request will be routed to other warehouses. The optimal stock policy (S) which can minimal total cost is the optimized target, including holding cost, ordering cost, maintenance cost and transshipment cost. A heuristic approach is used to obtain S. Using the heuristic methods, a complex system consisted of one plant, two central warehouses and three local warehouses is considered, the system served for three groups with two machines, and five modules is consisted in each equipment. The simulation results show the model's effectiveness.