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Since the design practices described in this paper are numerous, wide in scope, and briefly dealt with, the material can be abstracted only by enumerating the subjects treated. Included under "POWERHOUSE" are: turbine-generators, generator bus, control and instrumentation, protective relaying, data logging, annunciation, communications, station service power, vital a-c power, motors, batteries, cable, cable trays, and conduit. "SWITCHYARD" includes main power transformers, general arrangement, insulation levels, and grounding. "COAL HANDLING" covers power supply, control, and instrumentation. The material presented will provide to the electric power industry, for the purpose of comparison or duplication, the current design practices developed for very large generating units in a major power system.