Unit 1 & 2 Generator Stator Rewind   3

The Tulsa District Corps of Engineers has a requirement to perform all work required to rewind two approximately 50 MVA hydroelectric generating units at Keystone Powerhouse, Sand Springs, OK. The contractor shall furnish all labor, material, and equipment to perform this work in strict accordance with the detailed requirements of the specifications and associated drawings. The work described within these specifications shall include, but not necessarily be limited to, the following:

1. Design, manufacture, and perform Voltage Endurance test on prototype coils (or Roebel bars).

2. Perform Thermal Cycle test on prototype coils (or Roebel bars).

3. Design, manufacture, shop test, prepare and load for shipment, deliver f.o.b. destination, and unload two complete sets of stator coils (or Roebel bars) and specified accessories.

4. Pre-disassembly mechanical and electrical testing, and alignment checks of two hydroelectric generating units.

5. Disassemble two generator units, including the exciter equipment, air housing, and rotor.

6. Remove old stator coils, install and test new stator windings and accessories.

7. Clean, inspect, and test stator iron; perform necessary repairs to stator iron.

8. Furnish and Install new surge rings, circuit rings, main leads, and neutral leads.

9. Refurbish (machine) the collector rings.

10. Clean and inspect rotor, clean and test the rotor field poles winding.

11. Furnish spare parts.

12. Perform generator special field tests.

13. Furnish manufacturer's representative on-site services to supervise installation of the generator stator coils (or Roebel bars), reassembly, and to perform start-up, commissioning, and testing of two generators.

14. Perform all work required for painting, miscellaneous welding, machinist, electrician, and other skilled craftsman hire.