Written for the boiler operator who has knowledge and experience, but would like to learn more in order to optimize his performance, this text is also clearly-presented enough to be an indispensable guide for those beginning their careers, as well as being suitable for managers and superintendents interested in reducing a facility's operating expense. Based on the author's forty years of experience in boiler plant operation, design, construction, start-up, retrofit and maintenance, it contains absolutely key recommendations to operators and managers of plants large and small.