Assessment of the Optimal Inventory Plan for a High-Speed Tilting Train for the Korean Rail Network

초록

This paper presents a cost-effective optimal solution of the multi-indenture system plan for a high-speed tilting train for operation in the Korean rail network. A six-car prototype test high speed tilting train was built in December 2006 and it has a top speed of 200km/h. A trial run was conducted in order to evaluate the reliability and safety of the tilting train on the curves of the Gyeongbu line (between Seoul and Busan), which is the line that is being considered for implementation of a commercial tilting train service. The primary objective of this paper is to analyze the current probabilistic theory for the outstanding demand for spare parts and determine alternative methods for calculating the expected number of backorders when the multi-echelon structure associated with the multi-indenture is implemented. In this study, the system structures of the proposed tilting train were analyzed at four levels, with Level 4 being applied to the shop-replaceable units and Levels 1 to 3 being applied to the line-replaceable units. The optimal quantities of the spare parts were calculated by limiting the operation of the tilting trains and EMU trains (non-tilting) to the Gyeongbu line using logistics and supportability.