Archives
August 2015 (1)
June 2015 (1)
May 2015 (1)
February 2015 (1)
January 2015 (1)
November 2014 (2)
October 2014 (2)
September 2014 (6)
August 2014 (1)
July 2014 (5)
June 2014 (1)
March 2014 (3)
February 2014 (2)
January 2014 (1)
November 2013 (3)
October 2013 (1)
August 2013 (3)
July 2013 (4)
May 2013 (4)
April 2013 (3)
March 2013 (2)
February 2013 (3)
January 2013 (4)
December 2012 (6)
November 2012 (9)
October 2012 (10)
September 2012 (9)
August 2012 (14)
July 2012 (17)
June 2012 (14)
May 2012 (13)
April 2012 (18)
March 2012 (14)
February 2012 (10)
January 2012 (12)
December 2011 (8)
November 2011 (11)
October 2011 (10)
September 2011 (13)
August 2011 (10)
July 2011 (6)
June 2011 (12)
May 2011 (8)
April 2011 (8)
March 2011 (9)
February 2011 (6)
January 2011 (9)
December 2010 (8)
November 2010 (17)
October 2010 (8)
September 2010 (12)
August 2010 (15)
July 2010 (10)
June 2010 (15)
May 2010 (9)
April 2010 (11)
March 2010 (13)
February 2010 (10)
January 2010 (14)
December 2009 (14)
November 2009 (10)
October 2009 (17)
September 2009 (20)
August 2009 (18)
July 2009 (22)
June 2009 (12)
Categories
Answering Questions
Avista Utilities
CFLs
Clark Fork
Community Service
Customer Service
Electricity
Energy Assistance
Energy Efficiency
Environment
Environment Facts
Events
Hydro power
Idaho
Infrastructure upgrades
Lake Coeur d'Alene
Natural Gas
Oregon
Power Outages
Rates
Rebates/Incentives
Reliability Facts
Renewable Energy
Renewable Facts
Safety
Smart Grid
Spokane River
Video
Washington
Weather
Wildlife
Wind

Noxon Rapids Dam upgrades set to finish by next spring   

Tags: Avista Utilities, Electricity, Hydro power, Infrastructure upgrades, Renewable Energy, Clark Fork

Post by Brandi Smith

Noxon turbine runner and shaft.
This is a picture of the upgraded turbine runner and shaft
prior to installation. The turbine runner (water wheel) is 18
feet in diameter and weighs 130,000 pounds.
Generator rotor.
This picture shows the generator rotor being lowered into unit
3. It is 34 feet in diameter and weighs 650,000 pounds.
Project management is like juggling three balls at once - time, cost, and quality. The four-year, $45 million project to upgrade four generating units at Noxon Rapids Dam, Avista’s largest hydro facility, started in July of 2008. The improvements include upgrading the generator, installing higher capacity transformers and replacing the original turbine runners in all four units.

Sounds simple enough right? Well not so much.

Unfortunately, our local hardware stores don’t carry parts for turbine runners and generator rotors, so as you can imagine, this is no small deal. In fact, many of the parts that need to be replaced or refurbished have to be ordered a year in advance and are shipped from all over North America.

Each turbine runner weighs 130,000 pounds and the generator rotor weighs 650,000 pounds which combined is the equivalent of 47 elephants. Dealing with such significant weights and sizes makes the project more complex. Additionally, all of these upgrades are taking place in the midst of routine dam operations and maintenance. Talk about a juggling act.

To date, the Noxon team has finished upgrading two units and is nearly finished with the third, which will start seeing action this spring. The crew will begin work on the final unit this summer to complete the project by April of next year.

When finished, the improved turbine runners will generate more power using the same amount of water. Pretty cool, right? Approximately 30 megawatts will be added to the plant’s current maximum capacity (556.6 MW) and the incremental energy generated will meet some of the renewable energy portfolio standards as well. It’s a win-win.
The Noxon Rapids Dam is located on the Clark Fork River in Montana and provides Avista customers in Washington and Idaho with clean, renewable hydroelectric power.

Watch this video from 2009 of Noxon’s Unit 3 being removed from the bowels of the dam. Avista Blog: Noxon Rapids Dam upgrades underway, massive Unit 3 turbine removed.
 
Posted by  System Account  on  3/2/2011
0  Comments  | 0  Links to this post | Bookmark this post with:          
 

Comments

Add a Comment


We encourage comments on this blog, but this is a family friendly conversation, so please check out our discussion guidelines so we’re all on the same page. By submitting a comment, you agree to these terms and our Privacy Policy.  

Customers must have a My Account and be logged in to comment.
Login to My Account | Create My Account


Name:    
Comments:    



We're hopeful that this space will encourage thought provoking and informative community discussions about issues related to our products and services. Currently you must be an Avista customer to participate in the conversation, but stay tuned. In the coming weeks we'll also provide an opportunity for non-customers to participate in this forum.