Currant Creek Gas-Fired Power Plant

PacifiCorp

Location
Mona, Utah, USA
Industry Served
Region
North America
Year Completed
2006

Scope of Work

Cost estimating, Engineering, Design, Procurement, Construction and Startup 

Summary

In three years, McDermott built one of the Top Plants named by POWER Magazine in 2006. We finished the project in Mona, Utah, at 15 percent lower than the average cost of a similar power plant, and completed more than 1.5 million safe work hours while implementing the latest turbine technology and modern design to increase efficiency. The plant was built in two phases, with the first focusing on the installation of two 170 MW GE-7FA natural gas-fired, simple-cycle combustion turbines. The second phase was dedicated to the installation of two heat-recovery steam generators and a common, reheat condensing steam turbine. Each combustion turbine is equipped with dry low-NOx combustors to minimize NOx formation. A selective catalytic reduction system was installed to further reduce emissions. McDermott used the services of its pipe fabrication and manufacturing shops in Louisiana and Utah to assemble major pipe racks, portions of boiler feedwater, main steam and reheat piping, and other modular components. Major features include the following:                                                  

  • Air cooling. All major cooling loops are air-cooled for significant savings in water use. 
  • Heat rate performance. The latest turbine technology coupled to modern heat-recovery steam generator design and natural gas performance heating for enhanced heat rate, which offsets the effect of air cooling.  
  • Combustion turbine inlet air cooling. Evaporative cooling increases combustion turbine efficiency during hot, low-humidity periods, at up to 5 MW benefit per combustion turbine. 



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