Sarıgül, Mert
The growing production market and the resultant increase in raw material requirements create pressure on mining companies to achieve production at a higher rate by keeping unit operating costs manageable. It is recognized that the performance of mining machinery, maintenance downtime profiles, and operating cost variations are the main parameters effective in the sustainability of machinery fleets. On this basis, developing robust and up-to-date maintenance policies regarding operation dynamics and fleet machinery configuration is vital for mining production. A maintenance policy embodies various work packages such as corrective repair, corrective replacement, preventive replacement, on-condition maintenance, and regular inspections. Which packages need to be included in the maintenance policy for which components depend on repairability or replacement conditions of components and the expected financial benefits of each decision. Moreover, reliability and maintainability behaviors of system components are highly effective in the decision-making process since a maintenance policy should provide a balance between over-maintenance and under-maintenance. This study intends to develop reliability-based maintenance policies using fault tree analysis for a truck fleet, including six trucks operated in a surface coal mine in Türkiye. Seven maintenance policies for improving reliability were evaluated and compared according to their contributions to operating cost and fleet availability. The policy contents generated an availability variation between 59% and 66%.


Optimization of the lubricating oil inventory policy applied in a mining company
Şenses, Sena; Gölbaşı, Onur; Bakal, İsmail Serdar (2021-02-01)
The mining industry should sustain mass and continuous production with an essential contribution of high-capacity machinery. Therefore, spare parts inventory management is vital in ensuring the intended mining production rate as an integral part of maintenance policies. In this paper, a mixed-integer model is presented to solve a multi-item and multi-supplier spare parts inventory model. This model is addressed to a lubricating oil inventory problem in one of the biggest multi-process mining companies in Tu...
Preliminary estimation of rock mass strength using diamond bit drilling operational parameters
BASARIR, H.; Karpuz, Celal (2016-03-03)
In many mining engineering applications such as prospecting, development, production and grouting, diamond bit drilling is widely used due to high penetration rate, core recovery and its ability to drill with less deviation. It has been well known that the operational parameters of diamond bit drilling are closely related with rock mass strength properties. One of the most widely discussed subjects in drilling is the possibility of using diamond drill bit operational parameters for preliminary estimation of...
Development of a knowledge-based tool for waste management of prefabricated steel structure projects
Mirshekarlou, Babak Rahmani; BUDAYAN, Cenk; Dikmen Toker, İrem; Birgönül, Mustafa Talat (2021-11-01)
Although the construction industry is critical for sustainability goals due to the high amount of waste it generates, its waste management performance is still not at the desired level. One of the main reasons for this can be attributed to the lack of enough knowledge of construction companies on the sources/reasons of waste and amount of waste. The major aim of this study was to develop a knowledge-based tool for capturing, storing, and disseminating waste-related knowledge for prefabricated steel construc...
A spare parts inventory optimization study in mining
Şenses, Sena; Gölbaşı, Onur; Bakal, İsmail Serdar (2022-1-01)
Spare parts inventory management is of vital importance in maintaining high equipment availability at minimum cost, especially for industries utilizing fully mechanized systems and aiming mass and continuous production such as mining. In this paper, it is intended to solve the spare parts inventory problem of a large-scale mining company operating in Turkey, by proposing a mathematical model to optimize the spare parts provisioning strategy in such a way that the total inventory related cost is minimized. B...
Development of a multi-scenario simulation model for spare parts inventory optimization in mining operations
Şenses, Sena; Gölbaşı, Onur; Department of Mining Engineering (2021-8)
The growing market competition compels many industries to change their operational structures at strategic and operational levels dramatically. It has been recognized that inventory management requires continuous monitoring and improvement and it is vital for businesses to ensure smooth operations by avoiding production loss and reducing the overall cost of inventory. For various production companies operating in different industries, inventory is considered as one of the most expensive assets. Among differ...
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