This Paper presents the main design features and describes operating experience to date of a unique gas pipeline compression system marketed under the name MOPICO (Motor Pipeline Compressor). MOPICO has been developed jointly by four companies in USA and Europe. A prototype unit was works tested in 1990 and subsequently installed as an extension to an existing gas booster station in Alabama, where it has been in industrial operation since 1991.

The main elements of the motor/compressor design and the overall system performance capabilities are described briefly. Operational experience on a grass-roots station equipped with three units connected in series in a booster station in the US north east, and two single unit stations in the Province of Quebec are presented in detail.

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