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Reliability, availability and maintainability (RAM) investigation of Load Haul Dumpers (LHDs): a case study

Author

Listed:
  • Balaraju Jakkula

    (NITK Surathkal)

  • Govinda Raj Mandela

    (NITK Surathkal)

  • Suryanarayana Murthy Chivukula

    (NITK Surathkal)

Abstract

Load Haul Dumpers (LHDs) are prominent equipment employed for transportation operations in many of the underground mines. This equipment often suffers from frequent breakdowns due to a variety of technical and managerial practices resulting in increased maintenance costs and loss of production and productivity. Reliability, Availability and Maintainability (RAM) analysis deal with the optimal functioning of equipment, maintenance scheduling, controlling cost, and improvement of availability and performance. Keeping this in view, the current study focused on the estimation of the performance of the equipment using RAM investigation. The required failure and repair data of LHDs were collected from field investigations. Graphical analyses using Trend and serial correlation tests and analytical analysis using Statistic-U test were conducted to validate the Independent and Identical Distribution (IID) nature of the data sets. Based on the above tests, the Renewal Process was adopted to carry out the RAM analysis. The best-fit approximation of datasets was selected by performing the Kolmogorov–Smirnov (K–S) test. In addition to that, the reliability-based Preventive Maintenance time intervals were estimated to improve the percentage of reliability.

Suggested Citation

  • Balaraju Jakkula & Govinda Raj Mandela & Suryanarayana Murthy Chivukula, 2022. "Reliability, availability and maintainability (RAM) investigation of Load Haul Dumpers (LHDs): a case study," International Journal of System Assurance Engineering and Management, Springer;The Society for Reliability, Engineering Quality and Operations Management (SREQOM),India, and Division of Operation and Maintenance, Lulea University of Technology, Sweden, vol. 13(1), pages 504-515, February.
    • Handle: RePEc:spr:ijsaem:v:13:y:2022:i:1:d:10.1007_s13198-021-01154-3
    DOI: 10.1007/s13198-021-01154-3
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    References listed on IDEAS

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    1. Barabady, Javad & Kumar, Uday, 2008. "Reliability analysis of mining equipment: A case study of a crushing plant at Jajarm Bauxite Mine in Iran," Reliability Engineering and System Safety, Elsevier, vol. 93(4), pages 647-653.
    2. Leitch, Roger D., 1995. "Reliability Analysis for Engineers: An Introduction," OUP Catalogue, Oxford University Press, number 9780198563716.
    3. Balbir S. Dhillon, 2008. "Mining Equipment Reliability, Maintainability, and Safety," Springer Series in Reliability Engineering, Springer, number 978-1-84800-288-3, December.
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    Cited by:

    1. Monika Saini & Jitendra Yadav & Ashish Kumar, 2022. "Reliability, availability and maintainability analysis of hot standby database systems," International Journal of System Assurance Engineering and Management, Springer;The Society for Reliability, Engineering Quality and Operations Management (SREQOM),India, and Division of Operation and Maintenance, Lulea University of Technology, Sweden, vol. 13(5), pages 2458-2471, October.

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