Abstract
Abstract The Grand Coulee power plant, when fully equipped, will be the largest hydroelectric power plant in existence, containing eighteen 150,000-hp main generating units and three 14,000-hp station-service units, or a total capacity of 2,742,000 hp. The turbines are of the vertical-shaft single-runner Francis type with spiral casing, supplied with water through individual plate-steel penstocks connecting with the upstream face of the Grand Coulee Dam. This paper describes in some detail the mechanical features of the main hydraulic turbines for this plant.
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