JDA Tainter Valves (TV3 & TV4) Repair

The U.S. Army Corps of Engineers is soliciting bids for the repair and rehabilitation of two Tainter Valves (TV3 & TV4) at the John Day Lock and Dam. The scope of work includes structural repairs, replacement of seals and seal plates, and installation of new armor plates. The contractor will be required to remove and transport the damaged valves to a fabrication shop for repair and then reinstall them at the project site. The estimated period of performance is 321 days, and the estimated magnitude of construction is between $1,000,000 and $5,000,000. • The repair of cracks, corrosion, and cavitation damage on the skin plate, girders, and other structural members • Corroded sections of the Tainter valve will need to be repaired per USACE specifications • All structural welds must conform to AWS D1.1 standards • The contractor must provide as-built dimensional control survey of each valve upon removal, completion of repair work, and prior to reinstallation