Optimization of the Overall Equipment Efficiency (OEE) of Loaders and Rigid Frame Trucks in NAMDEB Southern Coastal Mine Stripping Fleet, Namibia
Volume 2, Issue 6, December 2013, Pages: 158-166
Received: Sep. 8, 2013;
Published: Jan. 20, 2013
Views 3813 Downloads 484
Akande, Jide Muili, Department of Mining Engineering, Federal University of Technology, Akure, Nigeria
Lawal, Abiodun Ismail, Department of Mining Engineering, Federal University of Technology, Akure, Nigeria
Aladejare, Adeyemi Emman, Department of Mining Engineering, Federal University of Technology, Akure, Nigeria
Follow on us
This research work investigates optimization of the overall equipment efficiency (OEE) of loaders and rigid frame trucks in Southern Coastal Mine Stripping fleet of Namibia. The objectives of the research were achieved through direct observation and recording in a natural setting. The collected data were duration of various cycle loss times components, loader and truck cycle times. The primary source of data is a time motion study conducted over day shifts. The secondary source is existing data from the mine. The collected data were recorded in print and transferred to corresponding digital spread sheet format in the Microsoft Excel® package for more efficient calculation and analysis. The results of the analyses revealed that OEE estimated for truck operation is 63.12% while that of loader is 24.4%. The estimated availability for truck by OEE is 60.67% while that of loader is 43.30% against the bench mark of 90%, the estimated performance for truck by OEE is 94.58% while that of loader is 59.94% against the bench mark of 90% and the estimated quality for truck by OEE is 110% while that of loader is 94% against the bench mark of 95%. From an availability perspective, queuing and bunching of trucks should be minimized.
Optimization, OEE, Loaders, Trucks, Time motion, Availability, Performance and Quality
To cite this article
Akande, Jide Muili,
Lawal, Abiodun Ismail,
Aladejare, Adeyemi Emman,
Optimization of the Overall Equipment Efficiency (OEE) of Loaders and Rigid Frame Trucks in NAMDEB Southern Coastal Mine Stripping Fleet, Namibia, Earth Sciences.
Vol. 2, No. 6,
2013, pp. 158-166.
Smart, K. (2009) "MA1 (Mining Area One) – Southern Coastal mine – Focus on stripping," Barloworld Equipment, Oranjemund.
Hartman, H. L. (1992): SME Mining Engineering Handbook 2nd Edition Volume 1, Colorado: Society for Mining, Metallurgy, and Exploration, Inc.
Elevli, S. and Elevli, B. (2010): "Performance Measurement of Mining Equipments by Utilizing," Acta Montanistica Slovaca Rocník, vol. 15, no. 2, pp. 95-101, 2010.
OEE Standard (2012): "OEE Industry Standard," [Online]. Available: http://www.oeestandard.com. [Accessed 20 11 2012].
Impact, O. (2012): "OEE Fequently Asked Questions," [Online]. Available:
http://www.oeeimpact.com/oee_faq.htm. [Accessed 21 11 2012].
ATS International B. V. (2010): White Paper on Overall Equipment Effectiveness (OEE) for Various Industries. ATS MES Excellence Centres.
INS Research (2012): "Overall Equipment Effectiveness," INS Research, [Online]. Available: http://blog.lnsresearch.com/blog/bid/155988/Overall-Equipment-Effectivness. [Accessed 16 11 2012].
Zemestani, G. (2011): "Evaluating the Overall Effectiveness of Production Equipment and Machinery," American Journal of Scientific Research, no. 31, pp. 59-68, 2011.
Automation World (2012): "OEE facts," Automation World, [Online]. Available: http://www.automationworld.com/operations/oee-facts. [Accessed 20 09 2012].
Williamson, R. M. (2012): "Don’t Be Misled by O.E.E.," Strategic Work Systems, Inc., 2004. [Online]. Available: www.swspitcrew.com. [Accessed 21 11 2012].
Burt, C., Caccetta, L., Hill, S. and Welgama, P. (2005): "Models for Mining Equipment Selection," Rio Tinto Technical Services, Perth.
Assakkaf, I. (2003): Trucks and Hauling Equipment, Maryland.
Komatsu (2008): Komatsu HD325-7 Off-Highway truck manual, Japan: Komatsu, 2008.