Preventive Replacement Decisions for Dragline Components Using Reliability Analysis


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DEMİREL N. , GÖLBAŞI O.

MINERALS, vol.6, no.2, 2016 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 6 Issue: 2
  • Publication Date: 2016
  • Doi Number: 10.3390/min6020051
  • Title of Journal : MINERALS
  • Keywords: dragline, data trend and correlation tests, reliability analysis, maintenance policy, preventive component replacement, MINING EQUIPMENT, LOAD, MACHINES, MINE

Abstract

Reliability-based maintenance policies allow qualitative and quantitative evaluation of system downtimes via revealing main causes of breakdowns and discussing required preventive activities against failures. Application of preventive maintenance is especially important for mining machineries since production is highly affected from machinery breakdowns. Overburden stripping operations are one of the integral parts in surface coal mine productions. Draglines are extensively utilized in overburden stripping operations and they achieve earthmoving activities with bucket capacities up to 168 m(3). The massive structure and operational severity of these machines increase the importance of performance awareness for individual working components. Research on draglines is rarely observed in the literature and maintenance studies for these earthmovers have been generally ignored. On this basis, this paper offered a comprehensive reliability assessment for two draglines currently operating in the Tuncbilek coal mine and discussed preventive replacement for wear-out components of the draglines considering cost factors.