—Technical Features of MidAmerican Project in the U.S.—
| Akitaka Tateishi | CBEC #4 Project Engineering Dept., MidAmerican Project Operation Div., Power Systems, |
| Hidetoshi Fujii | Steam Turbine Design Section, Turbine Plant Design Dept., Hitachi Div., Power Systems, |
| Tomoshige Koga | Generator Design Engineering Section, Power Electric Machine Design Dept., Hitachi Div., Power Systems, |
| Hajime Kimura | System & Engineering Section, Boiler Engineering Dept., Thermal Power Div., Kure Div., |
Hitachi has been awarded a contract for an overseas EPC (engineering, procurement and construction) project. This opportunity has provided us with a wealth of experience. In February 2003, Hitachi was asked by MidAmerican Energy Company in Iowa U.S., through Mitsui & Co. Energy Development, Inc., to execute the EPC of the Council Bluffs Energy Center, Unit 4, an 870-MW (gross) capacity power plant. This is the first large-capacity coal-fired EPC project for Hitachi in the U.S. This paper describes the technical features of the Council Bluffs Energy Center, Unit 4 project. This plant adopts PRB (powder river basin) coal-fired super critical once-through, sliding pressure, BHK (Babcock-Hitachi K.K.)-type Benson boiler under steam condition of 25.3 MPa·g, 566/593°C, a four-flow tandem compound turbine, with long 40-inch last stage blades, the largest-class two-pole generator, and cooling towers for circulating water. In addition, we adapted a De-NOx unit, a DFGD (dry flue gas desulfurization) unit, and highly efficient fabric-filter dust bags to satisfy the environmental regulations. Hitachi established a construction team to complete the plant within 45 months from the NTP (notice to proceed) to the S/C (substantial completion) phases. Advanced supercritical technology coal-fired power plants have not been constructed in the US. for at least 20 years. Working in close cooperation with MidAmerican Energy Company, the construction is now in progress.
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The Hitachi Hyoron (Japanese Only) |
EPC Project, MidAmerican Energy Company, Council Bluffs Energy Center, supercritical technology, turbine, generator, boiler
