Journal of the Korean Society of Safety (한국안전학회지)

The Korean Society of Safety (한국안전학회)
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Analysis of Thermal Characteristics for Components of Electrical Door System in Electric Multiple Unit

전동차 전기식 도어시스템의 구성부품에 대한 발열 특성분석

  • Lee, Bon Hyung (Daejeon Metropolitan Rapid Transit Corporation) ;
  • Kim, Doo-Hyun (Department of Safety Engineering, Chungbuk National University) ;
  • Kim, Sung-Chul (Department of Safety Engineering, Chungbuk National University)
  • Received : 2019.11.29
  • Accepted : 2020.02.10
  • Published : 2020.02.29
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Abstract

This research conducted an the failure analysis was performed based on the failure and operation data for Seven years using the Reliability, Availability, Maintainability, and Safety(RAMS) constructed at the operation stage after the opening of the D urban railway. therefore, the risk priority was selected for failure frequency component within the door system that showed high failure. Finally, the goal was to suggest ways to improve the door system. For this purpose, the analysis of thermal characteristics of failed components such as Door Control Unit(DCU) in the door system based on the Seven-year failure analysis data of RAMS was performed. These results were applied to the main component exchange cycle of the door unit, the mean time between failure(MTBF) and mean kilometer between failure(MKBF) values of RAMS increased by 26% in 2017-2018 when the improvement measures were taken, and the MTBF value of DCU was 300,000 hours, which was a 57% improvement in reliability. The results of this thesis identify potential enhancements in reliability and improvements in maintenance of the door system that, if implemented, would contribute to train safety and reduce instances of failure in the future.

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References

  1. Notice No. 2014-132 of the Ministry of Land, Rail Safety Management System Technical Standards, 2014.
  2. J. H. Baek, H. W. Kim, J. S. Lee and D. J. Um, "Study on the RAMS Detailed Implementation Plan Applying the RAMS Process", Autumn Conference Journal of the Korean Society for Railway, KSR2018F092, 2018.
  3. H. Y. Yang, "Reliability Centered Rolling-stock Maintenance Methods(RCRM)", Ph.D. Thesis, Chungnam National University, 2014.
  4. C. H. An, D. S. Lee, Y. G. Son and H. S. Lee, "A Study for Reliability Improvement of Belt Type Door System using FMECA", Journal of the Korean Society for Railway, Vol. 13, No. 1, pp. 58-64, 2010.
  5. C. S. Kim and H. S. Lee, "Reliability Analysis of Electric Door System for EMU" J. Korean Soc. Saf., Vol. 28. No. 8. pp. 52-56, 2013. https://doi.org/10.14346/JKOSOS.2013.28.1.052
  6. I. S. Jung, "Study on the Setting up and Demonstration of RAMS Requirements in Rolling Stock", Ph.D. Thesis, Seoul National University of Science and Technology, 2008.
  7. J.C. Kim, K. B. Lee, K. J. Lim and H. J. Kim, "A Study on the Scope of Urban Rail RAMS Activities for Railway Safety Management System", Autumn Conference Journal of the Korean Society for Railway, KSR2016A229, 2016.
  8. M O. Song, N. B. Lee, H. C. An and H. S. Ju, "A Case Study on the RCM of the Airport Railroad Engineering System", A Spring Conference Journal of the Korean Society for Railway, KSR2016S134, 2016.
  9. C. H. Lee, S. S. Lim and M.O. Song, "System of Effective RAMS Management for AREX Railway System", Conference Journal of the Korean Society for Railway, pp. 709-714, 2007.
  10. IEC 62278, Railway Applications -The Specification and Demonstration of Reliability, Availability, Maintainability, Safety(RAMS), 2002.
  11. Y. J. Yang and H. S. Lee, "Reliability Improvement Method of the Electrical Door System for the Railway Vehicles", Journal of Energy Engineering, Vol. 24, No. 1, pp. 17-23, 2015. https://doi.org/10.5855/ENERGY.2015.24.1.017
  12. D Urban Railway RAMS Analysis System, D Urban Railroad Corporation, 2019.
  13. J. S. Song "A Study on Reliability Evaluation of DCU (Door Control Unit) Power Modules for Railway Vehicles", Master's Thesis, Hanyang University, 2018.
  14. H. K Lim, "System Safety Engineering", Issued by Hansol Academy, 2012.