As a technician in plant, I learned that Maintenance and Reliability are the two things we should focus on. In most cases, plant personnels are more focused on Corrective actions rather than Preventive and Predictive approach. In this article, I'm going to share with some of the things I've learned from my previous job in plant. However, we will focus more on Vibration, Lubrication, Energy and Intercoolers. Table of contents 1. Types of Maintenance2. Vibration analysis3. Oil analysis4. Monitoring of the coolers5. Energy consumption Types of Maintenance The various analyses are made at frequencies determined by the strategy of maintenance which has been chosen. It is thus appropriate, for that, to define the main types of maintenance met: Preventive Maintenance Stops are envisaged systematically, at