Abstract

Along with the increasing expansion of technology and an increase in the competition between organizations, industries and organizations employ different strategies and policies to increase productivity and decrease organization costs. Maintenance is one of these policies which production industries with continuous arrangements use it to increase production, decrease costs and also stay in the circle of global competition. Maintenance systems have improved a lot in recent years. Reliability Centered Maintenance has been one of the latest technologies in maintenance to which the world is turning. This technology has different indicators and all of the industries use them to compare similar units or periods, and also they use the results of these indicators for taking maintenance decisions. We are going to study the dependency amount of two important scales called mean time to repair and mean time between failures with the amount of production in continuous line of production. In fact we want to survey the accuracy of available results of these indicators and applicability of their results. In this paper, we analyzed mean time to repair and mean time between failure indicators in Chadormalu industry-mining factory for four parallel lines of production during the years of 2008, 2009 and 2010 and specified the amount of their dependence with the amount of production and therefore it became clear that these indicators do not have dependency with the amount of production.

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