Questar Gas Management Indianola, UT Harris Group completed the detailed design and provided purchasing support for Questar’s Thistle Creek Unit 2 Compressor Station. The station is designed for a throughput of up to 179 MMscfd, which is achieved using a Solar Centaur 40, natural gas fueled, turbine-driven, two-stage centrifugal compressor. Auxiliary equipment specied by Harris Group for the station includes an inlet lter/separator, air-cooled gas after-cooler, liquid drain system, emergency shut down (ESD) blow down system with silencer, relief valves, control valves, turbine utilities, instrument air system, fuel gas conditioning system, and a catalytic fuel gas heater. The Challenge: Our scope was for a complete station design. In addition, the new Thistle Creek Unit 2 Compression Pr

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