New Melones Generator Rewind   4

Background
The Department of the Interior, Bureau of Reclamation, Region 10 - California-Great Basin Region Acquisitions Office, Sacramento, CA intends to issue a solicitation for a large construction project, New Melones Power Plant Generator Rewind. The estimated cost of this project is between $20 Million and $30 Million. The acquisition will be issued as a Request for Proposal (RFP) Part 15. This procurement is unrestricted; all responsible sources may submit an offer for consideration by the agency.

Work Details
PRINCIPAL COMPONENTS OF WORK: A. Rewind and uprate the two main synchronous generators from 166,667kVA to nameplate 192,000 kVA. B. Furnishing and installing video monitoring. C. Performing as-found readings.
D. Generator disassembly.
E. Generator inspection.
F. New Armature Windings and Existing Stator Core: 1. Furnishing and installing stator armature bars, circuit ring bus, and main and neutral bus. 2. Preparing and testing existing stator cores, core loop test, making necessary repairs, and re-run core loop test.
G. Generator Monitoring and Instrumentation: 1. Furnishing and installing generator neutral current transformers, exciter and split-phase current transformers, potential transformers, armature winding RTDs, stator air gap sensors, generator flow and pressure switches, generator thrust bearing oil level and flow switches.
H. Optional re-babbiting of turbine and generator bearings.
I. Replace generator air baffles.
J. Auxiliary Generator Equipment: 1. Furnishing and installing generator space heaters, thermostat and associated wiring. 2. Furnishing and installing generator air coolers and associated piping.
K.Perform Generator Ventilation Design Study and produce report: Redesign and implement design changes.
L.Generator re-assembly.
M.Commissioning.
N.Furnishing and installing generator neutral grounding transformer, and inspection of neutral grounding transformer cable.

Period of Performance
The performance period is estimated to be 1050 calendar days to complete.

Place of Performance
The place of performance is located at New Melones Powerplant approximately 50 miles east of Stockton, CA and 10 miles southwest of Sonora, CA in Calaveras County.