More Power to the Allegheny—Design of the Allegheny 8 & 9 Hydroelectric Stationsby Ed O'Connor, Ebasco Services Inc, New York, United States,
Abstract: The 13 MW Allegheny 8 Hydroelectric Station and the 17 MW Allegheny 9 Hydroelectric Station are located on the Allegheny River in the Commonwealth of Pennsylvania. The generating facilities were constructed at the site of existing Corps of Engineers navigation dams, located approximately 50 miles (80 km) north of Pittsburg, Pa. The powerhouses will divert up to 19,650 cfs (557 cms) at heads ranging up to 22 feet (6.7m). Each station consists of two pit type horizontal Kaplan units with step-up gear and synchronous generators housed in a reinforced concrete powerhouse. The design of the stations included special considerations for backwater effects, navigation, cofferdams and foundations.
Subject Headings: Power plants | Hydro power | Foundation design | Machine foundations | Reinforced concrete | Hydraulic design | Rivers and streams | Backwater | Pennsylvania | North America | United States
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