IJR International Journal of Railway Vol. 9, No. 1 / September 2016, pp. 10-14 Vol. 9, No. 1 / September 2016 - 10 - The Korean Society for Railway A Study on Life Cycle Cost on Railway Locomotive Systems Bunyod Egamberdiev*, Kookchan Lee**, Jongwoo Lee † and Shamil Burnashev*** ABSTRACT Life cycle cost analysis is compulsively required for the system operation. System operation costs are consisted of acqui- sition, operation, maintenance and so on. In the beginning of the system planning, we need to take into account of vari- ous costs following the system operating. To implement LCC, we need to analyze system life cycle to identify all costs during system life. The costs can be divided into three parts. The first part is purchasing cost, the second for operating cost and the last for disposal cost. The second operating cost can be decomposed of operating cost included labor, energy consumption cost for system running, maintenance costs to keep systems healthy, delay cost caused from maintenance and hazard cost, and so on. In this paper, we carried out for railway locomotives which operate over more 30years and which cost about 10 million USD. We decompose the life cycle of the locomotives and break down the locomotives into subsystems to require maintenance or not, and subsystems to need energy or not. We showed how to decide optimal locomotives through cost identification and system breakdown. 1. Introduction Customers have to consider the costs of procure- ment, energy consumption, maintenance and disposal when the customer buys a car or a boiler. Let’s con- sider to buy a car. Then we consider whether we choose gasoline car or diesel car. The gasoline car is cheaper than the diesel, but the diesel efficiency is higher than the gasoline. The maintenance cost of the gasoline is less than the diesel. The customers have to take into account total cost through LCC. Similarly, railway systems which are consisted of largely various systems must be taken into account the LCC analysis for purchasing, operating and decommissioning. Rail- way locomotive life is considered more than 30 years. The locomotive management requires the LCC analy- sis to use economically. The need of LCC analysis is shown in Fig. 1 implicitly. The cost analysis is required for system life cycle to run systems optimally. The analysis calls for system inquiry in which a cost model introduces to show which costs are demanded for the life cycle and system break- down takes place for which subsystems need mainte- nance, and so on Corresponding author: Graduate School of Railway, Seoul National University of Science and Technology E-mail : saganlee@seoultech.ac.kr Graduate School of Railway, Seoul National University of Science and Technol- ogy, Uzbekistan railways' JSC’ Graduate School of Railway, Seoul National University of Science and Technology Head of International Cooperation, Uzbekistan railways' JSC’ ⓒThe Korean Society for Railway 2016 https://doi.org/10.7782/IJR.2016.9.1.010 Fig. 1 Many costs are hided below water like an iceberg