Unit 1 and 2 Turbine/Generator Rehab at Philpott Powerhouse in Basset, VA

The contractor shall be responsible for field verifying existing drawings and creating as-built drawings. The contractor shall furnish all labor, material, and equipment to perform this work in strict accordance with the detailed requirements of the Scope of Work (SOW) specifications and associated drawings. The work described within these specifications shall include, but not necessarily be limited to the following: Perform all work required to comply with the site operations, environmental protection, and safety and health provisions. Perform all work required for painting including lead-based paint removal and disposal. Perform all work required for miscellaneous welding, machinist, electrician, and other skilled craftsman hire. Replace draft tube man door. Replace mounts for turbine maintenance platform (TMP). Design, manufacture, prepare, and load for shipment, deliver f.o.b. destination, and unload the Francis turbine runner and appurtenances. The runner design will using computer aided turbine design and numerical flow simulation methods, and evaluation techniques. Design, manufacture, prepare, and load for shipment, deliver f.o.b. destination, and unload the wicket gates. The wicket gate design will using computer aided turbine design and numerical flow simulation methods, and evaluation techniques. Disassemble generating unit by removing rotating and stationary components and related ancillary systems. Perform alignment investigations and provide recommendations. Analyze and provide recommendation on the wicket gate mechanism component and shear linkage design. Inspect and refurbish, or replace miscellaneous turbine and generator mechanical components and piping including but not limited to: brake cylinders, brake rings (option), wicket gate shear linkages, runner wearing rings, turbine shaft packing box and gland, wicket gate packing boxes and glands, servomotor, seals, runner coupling bolts, and other components as specified. Disassemble, inspect, and refurbish the gate shaft and operating ring. Replace all greased bushings with self-lubricating and rehabilitate or replace all mating journals and running surfaces to stainless steel. Work shall include line boring of the bottom ring and head cover bushing housings and bushings. Remove grease lines, plug holes, and equipment. All grease lines and equipment will remain property of the Government. Perform draft tube liner inspection and repair. Replace generator air coolers and size appropriately to the uprated generator. Inspect turbine and generator guide bearings and generator thrust bearings with option for refurbishment. Inspect thrust bearings with option for refurbishment. Supply and install RTDs for each bearing shoe for the Thrust and Generator Guide Bearings. Replace cooling and packing water piping 1 ½" and smaller (steel) or 3" and smaller (copper). Remove existing generator fire protection system (high pressure CO2) and replace with new low pressure CO2 system. Reassemble generating unit with a new turbine runner and appurtenances and other rehabilitated and replacement components. Clean turbine pit, generator, and work and storage areas used by the Contractor. Dispose of (recycle) grease, etc. Perform complete alignment of the turbine/generator unit. Perform pre and post operational tests on the generating unit. Design, manufacture, and perform voltage endurance testing on four (4) total prototype coils (only required for first unit). Design, manufacture, shop test, prepare and load for shipment, deliver f.o.b. destination, and unload one complete set of stator coils and all accessories specified herein. Furnish new stator core. Replace the rotor field poles. Replace the existing pole bodies, remove the existing field coil insulation, reinsulate the existing field coils, assemble the reinsulated field coils with the new pole bodies, install new amortisseur winding, and reinstall pole assemblies on the rotor. Replace the field lead bus stand-off insulators from the slip ring to the field winding. Inspect and test the rotor. Install and test new stator winding and accessories specified herein. Remove existing and install new stator cores. Rewind rotating exciter armature. Reinsulate rotating exciter field winding. Refurbishment of collector rings and replacement of brushes, and brush holders. Supply spare parts. Perform generator special field tests. Perform start-up, commissioning, and testing of the generator. Perform electrical equipment/wiring removal and installation including replacement of cable, wiring, gauges/meters, miscellaneous relays, and RTDs within the air housing, turbine pit, and associated with all bearings as required and directed. Have asbestos abatement performed as required for disassembly of the units.

Division 02 -	Existing Conditions, Hazardous Material Assessment, Site Remediation, Contaminated Site Material Removal, Asbestos Remediation, Asbestos Abatement, Removal and Disposal of Asbestos Containing Materials.
Division 26 -	Electrical.