Authors: V.A. Shevchuk, O.P. Muravlev

Title of the article: Analysis of failure-free operation probability for electrical machines in the diamond industry

Year: 2018, Issue: 4, Pages: 39-45

Index UDK: 621.313.3-192:622.37.013

DOI: 10.26730/1816-4528-2018-4-39-45

Abstract: The urgency of the discussed issue. Electric drives used for mining equipment in diamond mining indus-try are "critical" because the efficiency of the entire diamond mining complex largely depends on their reliability. Fail-ures and unplanned shutdowns of equipment even for a short time lead to loss of income and time, additional costs for repairs, and also jeopardize the safety of personnel and can sometimes lead to industrial disasters. Early diagnostics and repair using modern technologies minimize downtime and eliminate sudden failures. The main aim of the study. To determine critical time of the failure-free operation probability and the most vulner-able assemblies of electric machine groups used in the diamond industry, using the Kaplan-Meier multiplier method. The methods used in the study. Statistical methods for determining the quantification of operational reliability in-dicators. The results. The authors obtain data of the failure-free operation probability of mining equipment for different time intervals in graph and tabular forms. Critical time intervals of electrical equipment are determined and also the most defective assemblies are identified. Such data is necessary for increasing the efficiency of preventative maintenance and predicting the electric machines state in diamond industry.

Key words: diamond industry probability of failure-free operation survival statistic Kaplan–Meier estimator

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