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Third Power Plant Overhaul Project
Project Update
Third Power Plant Overhaul Project Summary Third Power Plant Overhaul Project Schedule News & Multimedia
 
Project Update - Third Power Plant (TPP) Status Report – November 08, 2013
500 kV Cable: The contract was awarded to Wilson Construction for $18.5M. The new overhead lines were commissioned in December 2012 and the oil-filled cables have been removed. The project was substantially completed in December 2012 when transmission was first achieved.  Remaining spacer work on the jumpers in the 500kV spreader yard was completed in late September so the contract work is now complete.
Shaft Seals: The $1.6M contract was awarded to SM seals in June 2010. The seals have been received, inspected and stored awaiting installation during the G22- G24 mechanical overhaul.
Mechanical Overhaul of Units G-22, G-23, G-24: The $102M contract was awarded to Andritz Hydro, Inc. Onsite work began in March 2013 and is scheduled for completion by December 2017. Unit G-24 is in reassembly mode currently. The turbine runner, wicket gates, inner and outer bracket, and turbine shaft have been installed. The contractor continues to work on various contract change orders, which has delayed the project by approximately 6 ½ months. G24 is expected to return to service in early spring of 2015, and then G23 will be next in line for overhaul.
Overhaul of Units G-19, G-20, G-21: The uprate of units G19-G21 is in design phase with a 30% draft spec due in November of 2014. The scope of work is that of the G22-G24 mechanical overhaul plus replacement of new generators, shafts, and runner upgrades, which will add a total of 240 megawatts of power generation at Grand Coulee. Design will continue on through FY15 and into FY16. 
 
 
 
 
As part of the Third Powerplant Overhaul Project, the contractor has prepared a simulation of the base scenario showing step-by-step how the units will be disassembled and placed in various locations. The animation was prepared using CAD files and other types of software listed in the credits. There is no audio in this version of the animation.

This interactive PDF showcases a 3D model of a generator and allows you to take it apart, rotate it, and view it in detail. Download the 9 mb PDF>>
 
Related Documents
Third Power Plant Generating Units Overhaul Activities EA Addendum
Third Power Plant Generating Units Overhaul Activities EA & FONSI
Grand Coulee's Third Power Plant 500-Kilovolt Transmission Line Replacement Project FONSI
Grand Coulee's Third Power Plant 500-Kilovolt Transmission Line Replacement Project EA (BPA)
 
Contacts
Brian Clark
bdclark@usbr.gov
Project Manager
Grand Coulee Power Office
(509) 633-9693
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Last Update: November 7, 2014 3:24 PM