Dimensions - Summer 2012 - 3
know l e dge
to the
Rising
Challenge
When Duke Energy sought Dewberry’s assistance in resolving a critical water transmission problem at the Belews Creek Steam Station, the challenge required a multidiscipline team approach. Dewberry’s Scott Ehrhardt, PE, discusses the successful solution.
What challenge was Duke Energy facing at its Belews Creek Steam Station in North Carolina?
Belews Creek is Duke Energy’s largest coal-burning plant in the Carolinas. The company has installed new scrubbers in order to meet more stringent federal air emission requirements, and the water demand from these scrubbers created critically low water levels in Belews Lake. To mitigate this effect, Duke was renting large, portable pumps each year to transfer water from the Dan River to Belews Lake. This operation was very expensive and marginally adequate to maintain proper operations.
a unique velocity cap intake design with independent fish screening was selected for final installation. The design included four 16-MGD pumps automated for staged withdrawal to comply with restrictive seasonal flowby requirements, as mandated by the North Carolina Department of Natural Resources. The entire system was also designed to comply with the new proposed Clean Water Act 316(b) requirements governing all power-generating facilities.
What stands out about the success of this project?
The team approach. We all worked together, including several knowledgeable professionals from Duke Energy, to create a solution based on the perfect blend of science, technology, and engineering. We resolved a costly problem for Duke Energy, while providing a higher level of protection to a pristine river environment and preserving recreational benefits for the public’s safety.
What measures resolved the water transmission problem?
We developed an engineering report and provided design and permitting assistance services for a new 65-MGD permanent pumping facility. Due to the shallow, environmentally sensitive conditions of the Dan River,
Summer 2012
3
http://www.dewberry.com/News/Blogs/Engineers/12-05-03/A_Pumped-Up_Solution_for_Duke_Energy
Dimensions - Summer 2012
Table of Contents for the Digital Edition of Dimensions - Summer 2012
Dimensions - Summer 2012
Contents
Spotlight on the Staff: Carrie Speranza
An Ambitious Roadway Widening
Rising to the Challenge: Q&A with Scott Ehrhardt
Ready to Respond
Sustainable Center Brings New Technology to Danville
Performance Briefs
Disaster Debris Exercise Enhances Regional Collaboration
Dimensions - Summer 2012 - Dimensions - Summer 2012
Dimensions - Summer 2012 - Contents
Dimensions - Summer 2012 - Spotlight on the Staff: Carrie Speranza
Dimensions - Summer 2012 - An Ambitious Roadway Widening
Dimensions - Summer 2012 - Rising to the Challenge: Q&A with Scott Ehrhardt
Dimensions - Summer 2012 - 4
Dimensions - Summer 2012 - Ready to Respond
Dimensions - Summer 2012 - 6
Dimensions - Summer 2012 - 7
Dimensions - Summer 2012 - Sustainable Center Brings New Technology to Danville
Dimensions - Summer 2012 - Performance Briefs
Dimensions - Summer 2012 - Disaster Debris Exercise Enhances Regional Collaboration
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