This book, for plant operators, managers, and students, presents the background knowledge of service systems necessary to keep production running. Production lines contain many sub-systems that must work together as an integrated system. This text focuses on the crucial but frequently forgotten parts of systems that comprise the essential peripherals or services, including pumps, boilers, power transmission, water treatment, waste disposal, and efficient lighting. Using a systems approach, the author discusses the features and characteristics of the service systems that allow for optimization of the plant.