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http://dx.doi.org/10.7782/JKSR.2012.15.5.508

Estimation of the Life-span for Urban Rolling Stock through LCC Analysis (Focused on Seoul Metro)  

Chung, Su Young (New business Division, Seoul Metro.)
Lee, Won Young (Dept of Railway Management & Polish Korea, Graduate School of Railway, Seoul National University of Science & Technology)
Publication Information
Journal of the Korean Society for Railway / v.15, no.5, 2012 , pp. 508-516 More about this Journal
Abstract
The lifespan of a rolling stock is limited to 25 years by the urban railway law. But it can be extended to 40 years by conducting the regular safety test. This gives additional 15 years of lifespan. In Seoul Metro, Many of the rolling stocks were already replaced with new types in 1996 and 2008. New type - VVVF rolling stocks have better safety, maintainability, durability than old types. For this reason, it is desirable to extend the lifespan of new type-rolling stocks. In this paper, we investigated the economical lifespan using LCC (Life Cycle Cost) analysis. This study shows that the economical lifespan comes out 41 years when extra 10% cost has been considered after 25 years of the train service and 46 years when extra 10% cost not considered.
Keywords
LCC(Life Cycle Cost); Economical lifespan;
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