As it had warned might be necessary, Florida Gas Transmission (FGT) issued an Overage Alert Day for market-area customers Tuesday, citing forecasts for temperatures in the mid to upper 90s in Florida. The tolerance for negative daily imbalances was set at 10%. FGT said it would not interrupt previously scheduled market-area ITS-1 service for Tuesday’s gas day.

Effective Wednesday until further notice, ANR will restrict interruptible storage injections. Based on its current and projected storage inventory, ANR said, injection nominations under Rate Schedules DDS and MBS will not be accepted. In addition, customers using those services must take their account inventories to zero by Oct. 31. Infield storage transfers are not being restricted at this time and ANR will continue to allow injections under Rate Schedules FSS and STS.

Westcoast reported finding a small leak on its 36-inch diameter line at Mile Post 27 between Stations 1 and 2. It began repairs Tuesday morning that are expected to last about 36 hours. “Due to the location of the leak, there will be no westbound physical flow” from Station 1 to Station 2 during the work, Westcoast said. It set a capacity constraint of zero for the affected segment Tuesday and said that would rise to 50% capacity Wednesday.

In a new attempt to return the Matagorda Offshore Pipeline System (MOPS) to service, operator Northern Natural Gas said it was bringing nine MOPS platforms on-line Tuesday and Wednesday to pressure test the system and bring the mainline back to normal operating pressure. In conjunction with this process, a cleaning pig has been launched into the system and is expected to be received at the onshore Tivoli (TX) Plant either Wednesday or Thursday. Once the pig is received at the plant, it will take about three days to process the accumulated liquids, Northern said. It hopes to resume normal operations on MOPS Sept. 2 and will be accepting nominations for that gas day at all platforms. New pig launches are scheduled for Sept. 3 and Sept. 7, but they are not expected to cause any new shut-ins. Last month Northern announced a plan to restore MOPS operations from a June 12 shut-in (see Daily GPI, July 20), but construction delays since then kept the restoration from being completed. Earlier this month a leak near the Matagorda Island 686 C platform prompted a force majeure declaration and further delay of the project (see Daily GPI, Aug. 13).

Northwest began installation of pigging facilities between the Plymouth and Goldendale Compressor Stations Tuesday. Primary firm nomination requests through the Plymouth North Constraint Point have exceeded the available capacity of zero, Northwest said, and thus it notified shippers of a Declared Deficiency Period that is expected to last through the end of Thursday’s gas day. Based on Plymouth North’s design capacity of 546,000 Dth/d, the Daily Deficiency Volume is 546,000 Dth/d, the pipeline said. Northwest also said it will schedule intraday (primary and alternate) gas to flow north through Baker Compressor Station up to its design capacity of 392,000 Dth/d during Columbia River Gorge maintenance scheduled for Tuesday through Thursday this week.

After reporting completion of repairs Monday at Rome Compressor Station (see Daily GPI, Aug. 28), Southern Natural Gas said Tuesday the replacement unit is currently unavailable and the vendor was scheduled to have a technician on-site Tuesday morning to investigate. Until the repair can be completed, Southern said it may be required to allocate/limit interruptible capacity (B-1 and IT) in Group 4-Chattanooga Group, Group 13-East Tennessee Group and Group 59-Tallapoosa Group and/or limit deliveries to 6% hourly entitlement rights.

Dominion said it must take Cornwell Station compressor units 7, 8 and 9 (wet system) out of service for unscheduled repairs at 6:30 a.m. EDT Wednesday and hopes to have them back in service later that day. But the possibility exists that they may not come back on-line until Thursday, the pipeline said. During the outage production in bubbles 2206, 2207, 3226 and 3227 must be shut in. Producers must check with Dominion field personnel prior to resuming any flows.

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