Northwest completed an anomaly investigation south of Muddy Creek Compressor Station and lifted the associated Declared Deficiency Period. The Muddy Creek South Constraint Point was reset to its north-flow design capacity of 513,000 Dth/d Friday. Due to a unit inspection at Caldwell Compressor Station, where Primary firm nomination requests exceeded the available capacity of 412,000 Dth/d, Northwest notified shippers of a Declared Deficiency Period at Caldwell for Friday’s gas day only.

Tennessee plans to begin piping modifications Sept. 4 at the Yscloskey Gas Processing Plant on its 500 Line in St. Bernard Parish, LA (Compressor Station 529). The pipeline expects the work to take seven days, during which all Tennessee deliveries to the plant will be suspended. Deliveries are expected to resume Sept. 12. Tennessee said it will take steps to mitigate liquids impacts downstream of Station 529 during this work, but further action may be required of producers and shippers if downstream gas quality creates operational problems for the Tennessee system or its interconnects with other parties. Restrictions of receipt points not having alternative gas processing in place may become necessary, Tennessee said.

Dominion plans to take Smithburg Station out of service Aug. 22-23 for work related to a planned expansion of the station. During the outage, all producer compression in bubble 4403 must be shut in. Another outage of several weeks will follow in the future when a new compressor and dehydration equipment are installed, Dominion said.

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