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NYPA's 500 Mw Combined-Cycle Power Plant

Skanska built a combined-cycle power plant to add 500 megawatts to New York City's power supply on a four-acre site adjacent to the existing Charles M. Poletti Generating Station.

The scope of work for this project included:
· construction of the power plant
· construction of a 97,000-square-foot, two-story building to house plant equipment
· installation, testing and commissioning of all equipment including two dual-fuel GE Frame 7FA combustion turbine generators and one GE D11 steam turbine generator
· installation, testing and commissioning of two heat recovery steam generators, each with a 160-foot-tall steel stack
· installation of 110,000 linear feet of process piping, along with 500 monitoring instruments
· installation of a 1 million gallon water tank
· installation of a 32-cell, air-cooled condenser
· installation of the plant's electrical systems including a digital control system, three step-up transformers, switchgear, 1.4-million linear feet of cable, 215,000 linear feet of conduit and 26,000 linear feet of cable tray
· installation of approximately 2,500 steel H-piles averaging 40 feet long
· installation of 37 24-inch and 30-inch caissons into rock

Because of the project's aggressive schedule, workers performed certain field activities in shifts around the clock.

Contacts

Beth Miller
Vice President, Communications
Skanska USA Inc.

Facts

Service: Construction
Mark segment: Power
Start date: 2003
Completion date: 2004
Clients: New York Power Authority
Country: United States
City: New York
Project status: Completed