Research Journal of Applied Sciences, Engineering and Technology15(3): 91-97, 2018 DOI:10.19026/rjaset.15.5833 ISSN:2040-7459; e-ISSN: 2040-7467 © 2018Maxwell Scientific Publication Corp. Submitted: August 4, 2017 Accepted: January 22, 2018 Published: March 15, 2018 Corresponding Author: Mohamed ER-RATBY, Faculty of Science and Technology, Industrial Engineering Laboratory, University Sultan Malay Slimane, BeniMellal, Morocco This work is licensed under a Creative Commons Attribution 4.0 International License (URL: http://creativecommons.org/licenses/by/4.0/). 91 Research Article Critical Study of the Different Types of Maintenance Used in Industry Mohamed ER-RATBY and Mustapha MABROUKI Faculty of Science and Technology, Industrial Engineering Laboratory, University Sultan MoulaySlimane, BeniMellal, Morocco Abstract: The aim of this study is to discuss and clarify the important features and characteristics of effective approaches in order to perform maintenance management. For this purpose, the relevant literature is examined, classified and analyzed to carry out a comparative study between many methods of the maintenance used in the industry. Deficient maintenance management can severely affect competitiveness of an organization by reducing throughput, increasing inventory and leading to poor performance, Maintenance management of industrial equipment is an important but still relatively neglected by business function In order to achieve world-class performance, more and more companies are replacing their reactive, strategies for maintenance with proactive strategies like preventive and predictive maintenance and progressive strategies like total productive maintenance. While these new maintenance strategies require increased commitments to training, resources and integration. They also tend to improve performance. This article discusses a research project to identify the strong points, weak points between the techniques of maintenance and the relationship between the approaches of maintenance and production methods. A survey was conducted to determine the relationship between the two approaches. Keywords: Advantage and disadvantage, maintenance management, maintenance strategy, manufacturing, performance, production INTRODUCTION Maintenance is the set of all activities meant to keep a system into a condition where it can perform its function. Quite often these systems are production systems. Some maintenance work can be done during production and some can be done during regular production or stops in evenings, weekends and on holidays. However, in many cases, production units need to be shut down for maintenance. This may lead to management problems between the production and maintenance department of a company. On one hand, the production department needs maintenance for the long-term well-being of its equipment; on the other hand, it needs to shut be down in periods where they could well be used for production. Maintenance productivity is one of the most important issues which manage the economy of production activities. However, productivity is often relegated to second rank and ignored or neglected by those who influence production processes (Singh et al., 2000). Productivity in a limited sense has been measured for several years (Andersen and Fagerhaug, 2007). Since maintenance activities are multidisciplinary in nature with a large number of inputs and outputs, the performance of maintenance productivity needs to be measured and considered holistically by using an integrated approach. With increasing awareness that maintenance makes a difference in to the business process; organizations are treating maintenance as an integral part of their business (Liyanage and Kumar, 2003). For many asset- intensive industries, the maintenance costs are a significant portion of the operational cost. Maintenance expenditure accounts for 20-50% of the production cost for the mining industry depending on the level of mechanization. Therefore, the importance of maintenance productivity is understood more and more by the management of the companies. The organizational role of the company requires a total change n the maintenance techniques, maintenance related costs have been on the increase in recent years (Parida and Kumar, 2006). In manufacturing organizations, maintenance related costs are estimated to twenty five percent of overall operating cost (Cross, 1988), (Komonen, 2002). In some industries, such as petrochemical, electrical power and mining, maintenance related costs may surpass operational cost (Raouf et al., 1993; De Groote, 1995; Etiet al., 2005; Parida and Kumar, 2006). As such, close attention