Leak

Columbia Gulf said Wednesday it is continuing repairs on the 26-inch diameter Eugene Island System in the Gulf of Mexico following a leak that occurred Sunday (see Daily GPI, Oct. 31). Total production associated with the shut-in is about 10,000 Dth/d at three platforms, the pipeline said. It expects to complete the repair work on or before Saturday, pending line pressure reduction, liquids removal and weather conditions that permit divers to enter the water.

Northern Natural Gas said late Friday night it has discovered a leak on a supply line to the Redfield Storage facility. This decreased injection capabilities, Northern said, but at this time it does not anticipate any limits on firm injection service.

Due to a leak on Coronado Pipeline, Dominion ceased deliveries to Columbia Gas at Cassity Mountain Wednesday. Dominion said it hopes to resume deliveries by June 30. All producers feeding directly into Coronado must shut in, Dominion said, and all producer compression in bubbles 4202, 4203 and 4205 on its system must be shut in until further notice. However, pool operators should not reduce their nominations during this outage, it added.

Florida Gas Transmission ended Wednesday an Overage Alert Day that had been in effect for the previous two days.

Florida Gas Transmission did not extend an Overage Alert Day beyond Tuesday.

Northern Natural Gas said Friday afternoon it had contracted a repair crew and dive boat that were en route to a leak site (see Daily GPI, March 2) on the Northern-operated Matagorda Offshore Pipeline System offshore Texas. Pending any weather delays, Northern expected the dive boat to arrive at the site late Saturday evening and repairs to begin Sunday. It anticipates restoration of service to some of the affected platforms downstream of Matagorda 758 by the start of Tuesday’s gas day.

Southern Natural Gas said Thursday it had completed repairs of a leak on its 14-inch diameter Chattanooga Branch line (see Daily GPI, Feb. 1) and the line is back in service. Southern resumed accepting nominations for interruptible deliveries (“B-1” and “IT”) in the affected area effective with Thursday’s Intraday 1 scheduling cycle.

Columbia Gulf reported discovering a leak on its 20-inch line upstream of the Eugene Island 250 platform in the Block 264 area. It said Eugene Island 331B, 314B, 314C, 314A and 271, where Columbia Gulf and Tennessee both have meters, and Eugene Island 294A, 338A, 315A and 316A, where Tennessee has the sole meter, will be required to shut in once repairs begin. No timetable for the repair startup had been set as of Friday afternoon, a spokesman said.

The Matagorda Offshore Pipeline System has determined that it does not have a leak on its 24-inch mainline (see Daily GPI, Aug. 5), operator Northern Natural Gas said. A force majeure situation on MOPS was canceled. NNG also said operational conditions on its East Leg had improved Friday, so it canceled a System Overrun Limitation for delivery points east of Belleville (WI) Station (see Daily GPI, Aug. 5).