In this final paper, the topic is the project of reinstallation of the pipe coating system. Project planing is a discipline that tells us how to complete a project within a certain time frame under resource limits. It is divided into project planning, execution and monitoring phases. For any future engineer who will deal with project management, it is important to know the techniques of planning, optimization, project monitoring and calculating the duration of the project in order to successfully plan and execute the project. The first chapter of this paper deals with the analysis of the pipe coating system and analyzes it on a technical basis and talks about the parts of the system. The second chapter talks about the phases and parts of the project as a whole in a way that explains every aspect of the project in its phases according to the HBS model. The next section discusses planning techniques using two types of line and network planning and project duration calculation techniques. In the last chapter, line and network planning techniques are applied with the help of computer programs such as: Microsoft Excel, Visio and Project on the example of reinstalling the pipe coating plant.