This thesis describes the company Nexe d.d. and technical data about the company itself with an emphasis on the organizational structure is given. Terms related to maintenance, overhaul and management are explained. The paper describes the plant for the production of clinker, presents its characteristics and analyzes the maintenance process of the plant itself. The application of the information system of the company Nexe d.d. was demonstrated at the selected plant (Microsoft Dynamics NAV) and MP2 Professional information system. The aforementioned information systems were used to monitor the process of preventive and corrective maintenance along with cost analysis. The aim of this paper was to show the importance of maintenance in the process industry, that is, the importance of planning and monitoring the maintenance process itself in order to increase the reliability of the machines, and thus reduce the possibility of breakdowns and why me. The paper concluded that the application of information systems improves and facilitates the very process of monitoring maintenance at the clinker production plant.