Rolls-Royce has received orders for three RB211 gas turbine packages from Union Gas of Ontario, Canada, for use on its natural gas pipeline network. These consist of two 38,000 horsepower RB211-6562 DLE (Dry Low Emissions) mechanical drive packages and one RB211-6761 DLE compressor set rated at 44,500 horsepower.
The two RB211-6562 units will replace two Rolls-Royce Avon-powered packages that have been running at the Bright compressor station since 1974. Included in the contract are new rotor bundles for the two Rolls-Royce RFBB36 centrifugal pipeline compressors currently powered by the Avon units. An existing RB211 compression package, installed in 1990, will also continue to operate at the Bright station.
The RB211-6761 gas turbine will power two Rolls-Royce RFBB42 pipeline centrifugal compressors in tandem, and will be installed at the Dawn compressor station alongside five RB211 compression packages that have been operating at the station.
The three compressor stations provide natural gas transmission service throughout the year. In the winter, gas is transported east from the Dawn storage facility to Toronto for residential and commercial use. During the summer months, gas is transported west from a TransCanada pipeline, back to Dawn for storage.
The gas compressor packages will be assembled at the Rolls-Royce facility at Mount Vernon, Ohio for delivery to the three sites in the third quarter 2008. The RB211 engines will be manufactured at the Rolls-Royce facility in Montreal, Canada.