Northwest reduced available capacity at Sumas from 1,313,000 Dth/d to 800,000 Dth/d due to engine damage discovered during routine inspections on Units 7 and 8 at the Sumas Compressor Station. Current net southbound nominations through Sumas are approximately 692,000 Dth/d, Northwest said. Emergency repairs are under way and Unit 7 is expected to be in service as early as Tuesday, while Unit 8 is expected to return to service March 16, it added. Available capacity will increase to 1,000,000 Dth/d when unit 7 is placed back in service, and the station design capacity of 1,313,000 Dth/d will be restored when both units are available for service. If primary nominations exceed 800,000 Dth/d prior to Unit 7 returning to service, Northwest said it will declare a deficiency period and cut nominations accordingly. “If customers require additional supply, Northwest suggests that they source gas from Alberta or Rockies interconnections,” the pipeline said.

Noting the colder-than-normal weather moving into its service area, CenterPoint told customers “it is extremely important” to avoid short imbalances. CenterPoint reduced its hourly swing tolerances Thursday, saying shippers, “particularly those whose swings can cause operational difficulties for [CenterPoint’s] system or discrete segments thereof, to take deliveries as close to ratably as possible throughout the day…” The pipeline said it will not allow shippers’ takes to exceed hourly ratable entitlements (based on nominated and scheduled quantities) by more than 5% in any single hour of the gas day.

Gulf South will perform about 12 hours of scheduled pigging on its Index 430 segment in East Texas beginning at 9 a.m. CDT next Thursday. The work will require 19 meters to shut in.

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