East River Generating Station

Rank #14 (Tied)
Cost: $200 million

The East River Generating Station, one of Consolidated Edison Co. of New York Inc.'s largest and most significant combined-cycle power stations, will be repowered by Slattery Skanska and its subsidiary Gottlieb Skanska.

Located on the east side of Lower Manhattan, the 43,000-sq.-ft. facility produces electricity and steam for homes and businesses throughout New York City. The project was completed May.

To repower the 360-MW power plant, the project team is performing all civil, structural, electrical and mechanical work, including the installation of major equipment, such as two GE Frame 7FA gas turbines, two Vogt-NEM, Inc. heat recovery steam generators and three Atlas Copco gas compressors. More than 100,000 lin. ft. of process pipe will be installed.

Construction of a new, onsite water treatment plant is also a part of the contract. The new treatment plant will consist of a 9,000 GMP reverse osmosis system that will produce pure water for steam generation. Electrical work includes the installation of 77,000 lin. ft. of conduit, 15,000 lin. ft. of cable tray, 665,000 lin. ft. of power and control cable and 30,000 electrical terminations.

The most challenging aspect of the project was the logistical constraints posed by the equipment being placed inside an operating powerhouse. The state-of-the-art equipment was offloaded via barge from the Hudson River and then trucked to the site. Workers then lowered the equipment into the plant through openings in the building's roof and sidewall. Major structural modifications to the existing building and shell were also part of the scope of work.

The project will produce a maximum steam generating capacity totaling approximately three million pounds per hour.

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