Pittsburgh CHP plant gets operational upgrade

Emerson Process Management has modernized the steam turbine controls at the GIM Channelview Cogeneration LLC plant in the US, boosting operational efficiency and reduced maintenance costs.

GIM Channelview is an 830 MW, combined-cycle (4x4x1) cogeneration plant that provides electricity and steam to Equistar Chemical's Channelview Complex, with surplus electricity sold for use by Texas consumers.

The plant, which began commercial operation ten years ago, utilizes four 170 MW Siemens-Westinghouse 501F natural gas-fired combustion turbines, four heat recovery steam generators and one Alstom COMAX steam turbine.

The GIM Channelview plant replaced the existing system with Emerson's Ovation control system. The company says that upgrading steam turbine controls to the has improved the plant's operational efficiency, saving GIM Channelview US$5000–$10,000 annually in fuel costs alone.

The retrofit was a turnkey project, with Emerson responsible for designing, engineering, manufacturing, testing, training, installing and commissioning the control systems.

In all, the integrated Ovation control system now manages more than 3100 I/O points across the entire plant, and includes nine redundant controllers and nine engineering and operator workstations communicating via fast ethernet network architecture.

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