Description
The U.S. Army Corps of Engineers (USACE) Portland District is soliciting a contract for the John Day Fish Pump Rehabilitation at John Day Dam, Oregon. The project involves the removal, refurbishment, and replacement of major components of Fish Pump Units 1, 2, and 3, including shafts, bearings, bearing brackets, and right-angle drive gearboxes. The work will require field disassembly of existing equipment, transport of components for off-site shop repair, precision machining, fabrication of replacement parts, and final reinstallation and alignment to manufacturer specifications. The contract is a firm-fixed-price contract, and the magnitude of construction is estimated to be between $1,000,000 and $5,000,000.
Some key objectives of the project include:
• Removal and replacement of damaged pump shafts and bearings.
• Repair-by-replacement of approximately 1000 horsepower class power transmission and reduction gearbox.
• Precision machining (true-up) of shafts, bearing housings, and diffuser components.
• Installation of greaseless bearing liners and replacement of stainless-steel bearing journals.
• On-site reassembly, shaft alignment, gearbox installation, and system balancing.
• Testing of the completed pump unit(s) to verify functional performance.
• Delivery of updated operation and maintenance manuals, drawings, and spare parts.