POWER CREEK HYDRO TOUR
5th October 2016
Gilkes North America Hydro Director, Darren Wager attended the NHAs (National Hydro Association) Hydro Project Tour of Power Creek hydro plant in Alaska recently which is powered by two Gilkes Turbines. The tour, arranged by Cordova Electric was part of the NHA Alaska Regional Meeting and gave delegates the opportunity to see a plant that was installed over 15 years ago still running at its generating capacity of 6.0MW.
The plant which is 7 miles east of Cordova in Alaska was commissioned by Gilkes engineers in 1999 and contains two Gilkes 43" twin jet Turgos, each with a generating capacity of 3.0MW.
The Turgo turbine was an excellent choice for the site conditions at Power Creek. The head and flow combination were a perfect match for 2 Gilkes 43" twin-jet machines with both of them running constantly, depending on the load demand on the island. Another factor is the Turgo's tremendous ability to handle aggressive or sediment-laden water, which Power Creek being located in a glacial run-off environment has proven over the years to be an excellent investment. The Turgo runner design ensures that even though wear will occur on the runner, the peak efficiency is maintained due to the sweeping action of the water along the runner water passage.
Commenting on the project, Darren said: "The 43" Turgo runners are the largest size Gilkes manufactures in this style of turbine, and it was great to see them producing the same energy output as they did when they were first commissioned in 1999. Credit must also be given to the CEC operations and maintenance crews who ensure that the powerhouse, turbines, and associated systems are kept in an immaculate condition."
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