Development of a hybrid reliability-centered model for escalator systems

Daniel O. Aikhuele () and Grace Ijele-Aikhuele
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Daniel O. Aikhuele: University of Port Harcourt
Grace Ijele-Aikhuele: University of Port Harcourt

International Journal of System Assurance Engineering and Management, 2022, vol. 13, issue 2, No 17, 771 pages

Abstract: Abstract The installation of vertical mobility systems (escalators) in high rise building has increased significantly in the recent past. Escalator systems which have been part of the utilities since the early 60s, has impact not only the movement of people and goods, but businesses that needs them to operate. It has lead to the need for continuous monitoring of the systems for failure by operators and reliability engineers. Although several authors have addressed failure related issue in the escalator system in past, literature has shown however, that the research works have not fully addressed issues relating to the root cause of failure in the system. In this paper, a reliability-centered model has been proposed and used for evaluating the root cause of failure issues in the escalator system by prioritizing the failure modes in the system. Results from the evaluation show that the failure mode 'Failure of the drag chain' has the highest risk and reliability concerns, while the 'Handrail fault' has the least risk and reliability concerns. To further check the feasibility and rationality of the model for addressing flexibility related issues that have become a basic characteristic of the modern fuzzy root cause of failure model, a sensitivity analysis has been performed using two quantitative reliability parameters of the escalator system that is ‘the Mean Distance Between Failure and the Failure Rate’.

Keywords: Reliability-centered model; CIF-TOPSIS model; Mean distance between failure; Failure rate; Escalator system (search for similar items in EconPapers)
Date: 2022
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DOI: 10.1007/s13198-021-01337-y

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