This book presents failure mechanisms of different boiler components and preventive measures. It illustrates the basic steam flow and circuit design of steam boiler, boiler design parameters, boiler components materials and their behavior at different temperatures. The book aims to identify the cause(s) of in-service failure of secondary superheater tube, platen superheater tube and furnace water wall tube and also presents the solutions to avoid the future failures. This volume will be of interest to researchers and professionals working in the areas of energy, power generation, electric power plants, thermodynamics, industrial chemistry, etc.