Third Power Plant Overhaul Project

Project Summary Project Schedule News and Photos

Project Update - Third Power Plant (TPP) Status Report – April 29, 2016

Mechanical Overhaul of Units G-22, G-23, and G-24: The $102M contract was awarded to Andritz Hydro, Inc. Construction for the first unit, G-24, began in March 2013; commissioning of the unit began in the fall of 2015 and was recently returned to commercial service. G-23 will begin overhaul in late April, followed by G-22 in 2017. This contract is anticipated to be completed by early 2019.

Overhaul of Units G-19, G-20, G-21: The uprate of units G19-G21 is in design phase with a 90% draft spec received and currently under review. The Scope of work is similar to 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 be completed in FY16 and be procured in early FY17. Model Testing of the new Runners will occur in 2017-2018, followed by Award in mid-2018, and Construction by late 2019.


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 Links
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)

Contact
Lynne Brougher
Public Affairs Officer
lbrougher@usbr.gov
(509) 633-9503


Last Updated: 4/29/16