Sources Sought - TDA Transformer 9-11 Interim Repair

The U.S. Army Corps of Engineers (USACE) is conducting market research to identify capable contractors for the inspection, repair, refurbishment, testing, and commissioning of Generator Step-Up (GSU) transformers at The Dalles Dam in The Dalles, Oregon. The project involves repair of failed Transformer T10 and preventative maintenance and refurbishment activities for Transformer T9, with an optional repair and refurbishment effort for Transformer T11. The contractor may propose either onsite repair activities or transportation of transformers to an offsite repair facility, subject to Government approval. Some key aspects of the project scope include: • Internal transformer inspections • Inspection and analysis of transformer winding damage, burns, discoloration, deposits, and conductor failures • Removal and replacement/repair of internal transformer conductors • Removal and installation of high-voltage and low-voltage bushings • Removal and installation of transformer-mounted devices • Replacement of gaskets and seals • Transformer oil draining, containment, temporary storage, disposal, vacuum processing, and hot-oil filling • Transformer electrical testing and oil testing • Sweep Frequency Response Analysis (SFRA) • Winding insulation resistance and power factor testing • Winding resistance testing • Turns ratio testing • Leakage reactance testing • Optional replacement of transformer cooling system isolation valves • Removal and disposal of asbestos-containing materials associated with transformer components