A confidential client hired Burns & McDonnell, in a joint venture with Skanska, to provide engineer-procure-construct (EPC) services on a lump sum, turnkey basis for an 85-MW natural gas-fired cogeneration facility. The plant will supply power and steam to an existing industrial facility.
The major components include a GE 7EA gas turbine, a Hamon-Deltak heat recovery steam generator (HRSG) and two Cleaver Brooks auxiliary boilers.
The net electrical output is a nominal 85 MW with a steam production of approximately 800,000 pounds/hour. The project is designed for baseload operation. The auxiliary boilers provide backup steam in the event the gas turbine generator/HRSG train is down for service. Nitrogen oxide (NOx) emissions are controlled by dry low NOx (DLN) combustors.
Unodorized natural gas is delivered via a new pipeline and is regulated, metered and conditioned on-site. Water is supplied from the existing facility for steam cycle makeup and service water. The plant connects to the 69-kV transmission system via a five-position ringbus switchyard, which is part of this EPC contract.
A plantwide distributed control system (DCS) monitors and controls the balance-of-plant materials and equipment and connects to the existing control room.