Chief Joseph Dam Station Service Refurbishment - Turbines & Generators

Refurbishment of the two station service units at Chief Joseph Powerhouse: The existing generators have a nameplate rating of 3.0 MVA and the existing turbines are Francis-type units with a nameplate rating of 3,500 HP at 171 feet of head. The work includes the removal of the existing components and systems of components which are known to have lead-based paint: General Work - Perform all work required for mobilization/demobilization. - Remove and dispose of items/systems to be discarded or replaced. - Provide platforms, tools and equipment as specified and required to perform the required work. - Clean turbine pit, generator, work and storage areas used by the Contractor. Dispose of (recycle) grease, etc. - Perform pre outage testing and post reassembly generating unit commissioning. - Draft tube fall protection anchors. Mechanical Work - Disassemble the generating units and turbines. - Inspect and refurbish turbine components. - Paint refurbished components. - Refurbishment of turbine guide bearings. - Provide new Teflon thrust shoes. - Refurbish upper and lower generator guide bearings. - Furnish bearing RTDs and replace existing RTDs with platinum RTDs. - Reassemble generating units. - Perform complete alignment of generating units. - Perform pre and post refurbishment generating unit operational tests. - Disassemble, clean, inspect, refurbish and reinstall all generator brakes and associated appurtenances. - Brake ring inspection, with optional refurbishment. - Provide new thrust bearing oil coolers. - Provide new surface air coolers. - Provide new float switches in the bearing tubs. - Provide new below the hook lifting devices. - Provide new turbine guide bearing coolers. - Provide new main cooling water piping and valves. - Provide new penstock equalizing and drain valves and piping. - Provide new wicket gates. - Refurbish the wicket gate servomotors. - Inspect the rotor spiders. Electrical Work: - Rewind the stators. - Replace stator cores. - Inspect and clean rotors and test the rotor field windings. - Optional re-insulation of the rotor field poles. - Replace field leads. - Replace 4160-volt generator cables. - Replace neutral breaker. - Perform electrical work related to the installation of bearing RTDs. - Perform electrical work related to installation of float switches and other instruments.

Dam/Tunnel, Renovation, Power Plant, Renovation.

Division 02 -	Existing Conditions, Subsurface Investigation.
Division 03 -	Concrete, Concrete Forming and Accessories, Concrete Reinforcing, Cast-in-Place Concrete, Structural Concrete, High-Performance Structural Concrete, Concrete Finishing, Specialty Placed Concrete, Precast Structural Concrete, Precast Concrete Specialties.
Division 04 -	Masonry, Unit Masonry, Concrete Form Masonry Units.
Division 05 -	Metals, Structural Metal Framing, Metal Fabrications.
Division 06 -	Wood, Plastics, and Composites, Rough Carpentry.
Division 07 -	Thermal and Moisture Protection, Dampproofing and Waterproofing, Thermal Protection, Weather Barriers.
Division 08 -	Openings, Doors and Frames, Specialty Doors and Frames, Access Doors and Panels, Coiling Doors and Grilles, Windows, Hardware, Glazing.
Division 09 -	Finishes, Plaster and Gypsum Board, Ceilings, Flooring, Painting and Coating.
Division 10 -	Specialties, Compartments and Cubicles, Toilet, Bath, and Laundry Accessories, Safety Specialties, Emergency Aid Specialties, Fire Protection Specialties, Exterior Specialties, Security Mirrors and Domes.
Division 11 -	Equipment, Parking Control Equipment, Loading Dock Equipment, Security Equipment.
Division 13 -	Special Construction, Radiation Protection, Special Instrumentation, Seismic Instrumentation.
Division 21 -	Fire Suppression.
Division 22 -	Plumbing, Instrumentation and Control for Plumbing, Plumbing Piping, Plumbing Equipment, Plumbing Fixtures.
Division 23 -	Heating, Ventilating, and Air Conditioning (HVAC), Instrumentation and Control for HVAC, HVAC Air Distribution.
Division 26 -	Electrical, Instrumentation and Control for Electrical Systems, Power Distribution Units, Lighting, Interior Lighting, Emergency Lighting, Exit Signs, Special Purpose Lighting, Exterior Lighting.
Division 27 -	Communications, Structured Cabling, Data Communications, Voice Communications, Audio-Video Communications.
Division 28 -	Electronic Safety and Security, Electronic Access Control and Intrusion Detection, Electronic Surveillance, Video Surveillance, Electronic Personal Protection Systems, Electronic Detection and Alarm, Fire Detection and Alarm, Radiation Detection and Alarm, Fuel-Oil Detection and Alarm.
Division 31 -	Earthwork, Site Clearing, Grading, Excavation and Fill, Subgrade Preparation, Excavation, Earthwork Methods, Soil Treatment, Soil Stabilization, Shoring, Tunneling and Mining, Tunnel Excavation.
Division 32 -	Exterior Improvements, Bases, Ballasts, and Paving, Flexible Paving, Rigid Paving, Curbs, Gutters, Sidewalks, and Driveways, Fences and Gates, Planting, Turf and Grasses.
Division 33 -	Utilities, Water Utilities, Sanitary Sewerage Utilities, Storm Drainage Utilities, Fuel Distribution Utilities, Electrical Utilities, Electrical Utility Transmission and Distribution, Utility Substations, Utility Transformers, High-Voltage Switchgear and Protection Devices, Medium-Voltage Utility Switchgear and Protection Devices, Communications Utilities.
Division 35 -	Waterway and Marine Construction, Dam Construction and Equipment.
Division 41 -	Material Processing and Handling Equipment, Conveyors, Cranes and Hoists.
Division 46 -	Water and Wastewater Equipment.
Division 48 -	Electrical Power Generation, Common Work Results for Electrical Power Generation, Instrumentation and Control for Electrical Power Generation, Electrical Power Generation Equipment, Electrical Power Generation Testing.