ANDRITZ has received an order from the U.S. Army Corps of Engineers (USACE) Tulsa District for the rehabilitation of both generators of the 70-MW Keystone generation station in Oklahoma, U.S.
The hydropower station is located at the Keystone Lake reservoir in northeastern Oklahoma on the Arkansas and Cimarron rivers, upstream about 23 miles from the city of Tulsa. Originally completed in 1968, the primary purposes of Keystone Dam and hydropower station were flood control, hydroelectric power generation, wildlife management and recreation.
The contract for the rehabilitation of the generators includes dis/reassembly of the units, removal of the old windings, installing new 13.8-kV bars to replace the existing coils, cleaning, inspecting, testing the core, installing new windings, miscellaneous new supply and refurbishment of electrical components, startup and commissioning, and on-site tests.
The order is scheduled to be completed by the beginning of 2023.
USACE’s Tulsa District operates and maintains eight hydroelectric power plants, containing a total of 22 turbine-generator units with a generating capacity of 584 MW. They are: Keystone Lake, Fort Gibson Lake, Eufaula Lake, Tenkiller Lake, Webber Falls Lock and Dam, Robert S. Kerr Lock and Dam, Lake Texoma and Broken Bow Lake.