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Asset replacement for an urban railway using a modified two-cycle replacement model

Author

Listed:
  • P Scarf

    (University of Salford)

  • R Dwight

    (University of Wollongong)

  • A McCusker

    (Mass Transit Railway Corporation Limited)

  • A Chan

    (Mass Transit Railway Corporation Limited)

Abstract

This paper considers the application of capital replacement models at Mass Transit Railway Corporation Limited (MTRCL), Hong Kong. A particular characteristic of the replacement problems considered is that costs relating to existing equipment are generally constant or increasing only slowly. Consequently, replacement is often driven by technical obsolescence, but other criteria are used for informing decisions. The applicability of traditional OR models of replacement is then problematic. We recommend the use of a modified two-cycle replacement model and compare this model to existing capital replacement models. Issues relating to the estimation of delay costs and failure consequences and their influence on the replacement decision are also considered—this is done using a fixed horizon model, which is a special case of the modified two-cycle model. Track points and escalators are used as particular examples. In addition to modelling recommendations, we discuss the management of asset replacement with emphasis on the procedures necessary to ensure that asset replacement requirements are considered appropriately and effectively. The paper treats, in particular, the procedural issues of asset replacement, and the discussion of asset replacement system methodology reflects the current practise at MTRCL, Hong Kong, and developments within that organization through collaboration with academia. The modified two-cycle replacement model is recommended by us for general replacement applications. The asset replacement procedure is presented as an exemplar for business and industry.

Suggested Citation

  • P Scarf & R Dwight & A McCusker & A Chan, 2007. "Asset replacement for an urban railway using a modified two-cycle replacement model," Journal of the Operational Research Society, Palgrave Macmillan;The OR Society, vol. 58(9), pages 1123-1137, September.
    • Handle: RePEc:pal:jorsoc:v:58:y:2007:i:9:d:10.1057_palgrave.jors.2602288
    DOI: 10.1057/palgrave.jors.2602288
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    References listed on IDEAS

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    1. Bowe, Michael & Lee, Ding Lun, 2004. "Project evaluation in the presence of multiple embedded real options: evidence from the Taiwan High-Speed Rail Project," Journal of Asian Economics, Elsevier, vol. 15(1), pages 71-98, February.
    2. Scarf, Philip A. & Martin, Harry H., 2001. "A framework for maintenance and replacement of a network structured system," International Journal of Production Economics, Elsevier, vol. 69(3), pages 287-296, February.
    3. Hartman, Joseph C., 2004. "Multiple asset replacement analysis under variable utilization and stochastic demand," European Journal of Operational Research, Elsevier, vol. 159(1), pages 145-165, November.
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    Citations

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    Cited by:

    1. Yatsenko, Yuri & Hritonenko, Natali, 2020. "Optimal asset replacement: Profit maximization under varying technology," International Journal of Production Economics, Elsevier, vol. 228(C).
    2. Yatsenko, Yuri & Hritonenko, Natali, 2015. "Algorithms for asset replacement under limited technological forecast," International Journal of Production Economics, Elsevier, vol. 160(C), pages 26-33.
    3. Yatsenko, Yuri & Hritonenko, Natali, 2017. "Machine replacement under evolving deterministic and stochastic costs," International Journal of Production Economics, Elsevier, vol. 193(C), pages 491-501.

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