Noting “the high volume of liquid recovered during the past weekend,” Questar said it has implemented more frequent pigging operations on its Southern System between Fidlar Station and Price, UT. The pipeline expects to accomplish pigging operations between the Riverbend area and Price with little or no customer impact, but said the work from Fidlar to the Riverbend area requires a change in flow direction. To facilitate the Riverbend-to-Fidlar pigging scheduled for Thursday, Questar has identified six production points in the area — Mesa Tap, Kings Canyon, Island 52-3, Hill Creek, Seep Ridge and Cottonwood Wash Tap — with hydrocarbon dew point levels in excess of 50 degrees F. It was accepting no nominations from those points for Thursday’s gas day said but said it would resume taking nominations there effective with Intraday 2 (Cycle 4) scheduling. Based on the liquids recovered during Southern System pigging operations, Questar will evaluate future nomination limitations from receipt points with high hydrocarbon dew points.

Westcoast, which last Thursday changed its imbalance tolerances to 15% pack and 5% draft due to falling linepack, has swung in the other direction. As of Tuesday’s gas day the tolerance range became zero pack and 20% draft.

In a new update on plans to restore segments of the 26-inch line between Sumas and Washougal, WA (see Daily GPI, Feb. 2), Northwest said it will attempt to restore about 120,000 Dth/d of the line’s former 360,000 Dth/d capacity this year. That level of capacity is most cost-effective for customers, the pipeline said, explaining that based on studies of historical Chehalis (WA) Station throughput versus operational capacity, it believes that the 120,000 Dth/d restoration “will provide the right amount of capacity to serve the market this year while at the same time minimizing restoration costs.” Northwest will initiate hydro testing this month with the goal of returning some segments to service by summer.

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