Reliability analysis of a fleet of loaders in Sangan iron mine

Abstract

As the size and complexity of open pit mining equipment continue to increase, the implications of equipment failure become ever more critical. Unplanned equipment failures and their consequences have significant influence on the total operating cost of a mining system. Keeping this in view, a reliability study has been performed for a fleet of loaders in Sangan iron mine of Iran. In this study, two approaches were considered for analyze maintenance data, namely a basic maintenance approach and a reliability based approach. In this paper, trend and serial correlation test were used to validate the assumption of independent and identically distribution. K-S test was carried out with the aid of Easy-Fit software to select best fit distribution. Finally, reliability the loaders 560 No. 1, 560 No. 2 and 4400 for the next 50 hours of operation have been predicted, 5.1×10-3, 8.3×10-3 and 1.2×10-4, respectively. To achieving the high reliability a review on maintenance program must be performed.