CPM Harnesses Mammoth Powerplant Job

by J. H. Shukla, (M.ASCE), Proj. Planning Engr.; Gilbert Commonwealth, Jackson, Mich.,
R. L. Kudich, Structural Engr.; Gilbert Commonwealth, Jackson, Mich.,
R. W. Staffensen, Construction Mgr.; Ohio Edison Co., Akron, Ohio,

Serial Information: Civil Engineering—ASCE, 1985, Vol. 55, Issue 1, Pg. 50-53

Document Type: Feature article


One of the largest air quality control retrofit projects in the U. S. is at the Sammis Plant of Ohio Edison Co., along the Ohio River 40 miles west of Pittsburgh. The coal-fired plant's 2,233 MW of capacity makes it one of the utility's largest, and the $450 million cost of the retrofit makes it one of the nation's largest. A very narrow site, between a bluff and the river, with the plant and a major highway between, necessitated placing most of the equipment on a structure 900 feet long and over the highway. Key challenge was to meet air quality deadlines set by courts and environmental agencies. Key to meeting the deadlines, in the project was a set of 200 critical path method logic diagrams, which together encompass the 7,500 tasks required by the project.

Subject Headings: Air quality | Critical path method | Power plants | Rehabilitation | Highway and road structures | Quality control | Project management | Rivers and streams | United States | Ohio | Ohio River | Pittsburgh | Pennsylvania

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