Transco said it will implement an Imbalance OFO effective Wednesday until further notice due to forecasts of much colder weather starting early this week in its entire market area. The pipeline reminded shippers of a notice two weeks ago advising of unplanned maintenance issues at Station 70 in Walthall County, MS, and at Station 100 in Chilton County, AL (see Daily GPI, Dec. 20) that continue to impact its ability to provide interruptible services, manage system imbalances and maintain intraday flexibility. In order to ensure system integrity, as of Tuesday (Jan. 1) Transco was not allowing excess storage withdrawals under WSS or GSS services, and it reduced pool imbalance tolerances to 1%. Wednesday’s OFO requires all customers to ensure that daily negative imbalances be no greater than 5%. Those with due-pipeline imbalances will not be subject to penalty, Transco said.

Citing forecasts of cold weather in its service area, MRT said it planned to implement a System Protection Warning (SPW) on New Year’s Day. These are the SPW conditions: MRT will not schedule any Main Line IT or AOR volumes for delivery north of Glendale, AR; firm volumes will be limited to their primary direction of flow; and MRT will not schedule volumes that result in a daily short position. Noting that it has capacity available on the East Line, MRT encouraged SPW-affected shippers to re-source supply to the East Line or reduce applicable delivery volumes.

El Paso raised the probability of its declaring a Strained Operating Condition or Critical Operating Condition due to low linepack to high Thursday night, then restored the probability to moderate early Friday.

Questar has scheduled modifications at its Greasewood Compressor Station for Jan. 21-31 to tie in a new processing plant. No nominations will be accepted at the TransColorado interconnect during those 11 days.

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