Bureau of Reclamation Banner
Reclamation Home             Reclamation Offices             Newsroom             Library             Projects & Facilities
Home > Third Power Plant > Overhaul Project Update
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. Spacers on the jumpers in the 500kV spreader yard still need to be installed and will be installed in an ongoing basis until April 2014 when conveniently planned with an existing and corresponding scheduled outage. The project was substantially completed in December 2012 when transmission was first achieved.
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 has been disassembled and refurbishment has been ongoing on the various components. The project has encountered various issues, including major wicket gate wear, which requires a five month extension to the contract; other portions of the unit found to have significant wear and require additional refurbishment include operating ring, servo mechanism, draft tube concrete surfaces, outer head cover, thrust bearing, and rotor.
Overhaul of Units G-19, G-20, G-21: The uprate study of units G19-G21 was completed in November 2013, determining the feasibility that a full uprate of these three units may be accomplished. Generator, Shaft, and Runner upgrades in each of these units could help add a total of 240 Megawatts of power generation at Grand Coulee. A Project Value Planning Study was completed in late April 2014 and preliminary design is now underway. 
 
 
 
 
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
Contact Us | Maps | Lake Level | News & Photos | A-Z Index | Laser Show | FAQ Bureau of Reclamation Facebook Bureau of Reclamation RSS Feed Bureau of Reclamation YouTube Bureau of Reclamation Twitter
Pacific Northwest Region RSS Feed Bureau of Reclamation YouTube Page Bureau of Reclamation Twitter Page

Last Update: October 18, 2006 1:11 PM