Both Duke Energy-operated pipelines, Texas Eastern and Algonquin, issued Critical System Warnings Sunday saying that based on anticipated system operations and weather conditions, all customers were required to immediately “eliminate excess receipts and conform scheduled receipts to actual deliveries.” The warnings will remain in effect until further notice. Texas Eatern noted that with unseasonably mild weather in the market area and shippers filling contract storage inventories in anticipation of the heating season, its storage capacity is now about 98% full, leaving little system flexibility. If mitigating action isn’t taken, an OFO with non-compliance penalties of $25/Dth may become necessary, the pipeline said. Without specifically mentioning a potential OFO, Algonquin said it may adjust customer nominations and/or revise scheduled quantities to halt further accumulation of imbalances. “In addition, AGT may take any actions within its operational capabilities to reduce excess receipts,” it added. No due-pipe imbalance makeup is being accepted until further notice.

NGPL said a leak was reported Wednesday on its 16-inch High Island Lateral offshore Texas. Three receipt points (Forest-High Island 116, Torch-High Island 71 and Superior-High Island 37) and the Centana-Jefferson delivery point were directly affected. NGPL worked with point operators as much as possible to minimize shipper impact. However, effective with today’s gas day the High Island 71 and 37 meters will be scheduled to zero and no increases will be allowed to scheduled volumes at the other two points. An offshore contractor is trying to locate and repair this leak, NGPL said Monday, and tentative plans are to have the High Island Lateral available for normal scheduling for Wednesday’s gas day.

Pacific Gas & Electric kept a Stage 3 high-inventory OFO that took effect Thursday in effect at zero positive imbalance tolerance through Friday, then loosened the tolerance to 1% Saturday. The OFO was lifted Sunday. Southern California Gas did not extend an Overnominations Day notice beyond Thursday.

El Paso will shut in Line 1600 upstream of Casa Grande Station today to make piping modifications. Capacity of the South Mainline will be reduced by 200 MMcf/d, but based on recent market demand, the outage is not expected to affect deliveries.

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