The book has brought our the common process and maintenance day to day occurrences in sub floor of major industries. It's written on field experience of the operation. It aims to provide a technical base to field operations and maintenance engineer about the equipment behavior. This will help to plant management to develop a reference guide to avoid the equipment breakdowns. This outlines the role of the engineers and the traits required for the field engineers. The development of the design and the process of carbon plant in Aluminum industries can help to the project executes for selection of best process and equipment to get maximum utilizations of the assets.