


| 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. |
| Mike Johnson Electrical / I&C Const Mgr |
| Mark Mora Electrical / I&C Const Supt |
| Eddy Prieto Electrical QC |


| Hitachi Electrical Construction Team Back Row L to R: Shinji Mizuno, Toshiharu Oshima, Gunji Tomita, Manabu (Mack) Kamigaki, Tomoya (TK) Kikkawa Front Row L to R: Shunji Kaneta, Hiroharu Murakami, Roger Lesaca, Ken Goto. Missing from photo; Mikio Hirokawa, Tsutoma Iwanaga. |
| Photo By: Mark Mora Sept 2006 |
| MID-AMERICAN ENERGY COMPANY, COUNCIL BLUFFS, IOWA |
| Current Project 2006 |

| Automated Process Control North America |