The Corps of Engineers has extended its deadline for proposals to supply replacement runners for 16 turbines at 2,457.3-MW Chief Joseph Dam, on the Columbia River near Bridgeport, Wash. The bid date is changed to Aug. 31 from the original Aug. 17.
The Corps’ Seattle District wants a contractor to supply replacement runners and to refurbish vertical Francis-type turbines of Units 1-16. There are two different designs: Units 1-4, 15, and 16, supplied by S. Morgan Smith Co.; and Units 5-14, supplied by Newport News Ship Building and Dry Dock Co.
The contractor is to design, model test, manufacture, deliver, install, commission, and test a replacement runner and appurtenances for a Newport News unit. Upon satisfactory testing of the prototype, the contractor will fabricate and deliver replacement runners and appurtenances for the remaining nine Newport News units. Only two units will be available for runner replacement at the same time. The government could exercise a contract option to replace existing runners and refurbish wetted surfaces for the six S. Morgan Smith units.
For information about Solicitation No. W912DW-06-R-0009, contact Lee Stratford, U.S. Army Engineer District, Seattle, Attention: CENWS-CT, P.O. Box 3755, Seattle, WA 98124-3755; (1) 206-764-6659; E-mail: firstname.lastname@example.org.
Voith Siemens to repair generator stator
The Corps chose Voith Siemens Hydro Power Generation earlier this year to repair the stator winding for Generator 15 at Chief Joseph. The contractor is to furnish supervision, engineering, labor, materials, and equipment.
The Corps said it discovered a stator winding fault in the connection between two coil groups. Connections in the vicinity of the failure also appeared to have suffered minor surface damage from the fault.