Abstract
This chapter covers pumps, electrical equipment and instrumentation and control used in water supply. The chapter is divided into three parts describing in Part I mechanical and civil assets, in Part II the electrical plant assets and in Part III control and instrumentation related to pumping equipment. Guidance is given on design and selection of pump type, body and impeller, station and plant layouts, pump suction and wet wells, cavitation and corrosion protection, types of motor, sources of energy including transformers and standby generation, Motor Control Centres, electrical cabling and heating and ventilation. Levels of control, instrumentation and automation and functions and types of control systems, communications networks and control of equipment are also discussed. The text defines terms and describes Affinity Laws, net positive suction head, specific speed, rated output, transient pressures, water hammer and surge, functional design specification, energy consumption, slip energy recovery, effects of electricity tariffs efficiency and performance monitoring.
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