Southern California Gas issued a high-linepack OFO for Thursday and extended it through at least Friday, saying it would assess Buy-Back charges in accordance with its tariff to customers who deliver into its system more than 110% of their actual gas usage on the OFO day. The e-mail notice for Thursday’s OFO was not sent until early that morning.
Linepack
Articles from Linepack
Transportation Notes
Neither Southern California Gas (SoCalGas) nor Pacific Gas and Electric extended their high-linepack OFOs beyond Saturday.
Transportation Notes
Southern California Gas declared a high-linepack OFO for Saturday, saying it would assess Buy-Back charges in accordance with its tariff to customers that deliver into its system more than 110% of their actual gas usage on the OFO day.
Transportation Notes
Citing lower linepack and its limited operational flexibility to manage market-area imbalances, Tennessee declared an Imbalance Warning in downstream Zones 5 and 6 Thursday. It requires all delivery point operators to keep actual daily takes out of the system equal to or less than scheduled quantities, and all receipt point operators to keep actual daily receipts into the system equal to or greater than scheduled quantities. Both conditions apply regardless of cumulative imbalance positions.
Transportation Notes
Due to continuing high linepack in all segments, Westcoast has implemented a systemwide OFO setting the tolerance for positive daily imbalances at the minimum of 10% or 500 GJ.
Transportation Notes
Demand exceeding capacity has resulted in a linepack loss downstream of Stations 245 and 321, Tennessee said, prompting it to issue Critical Day 1 OFOs for all LMS-PA Balancing Parities in Zones 5 and 6 effective Sunday. The OFOs will be in addition to Action Alerts implemented Friday in those zones along with one in Zone 4, Tennessee said.
Transportation Notes
Due to reduced takeaway capacity from Bear Creek storage in northwest Louisiana that impacted its ability to maintain linepack, Tennessee said a Critical Day 1 OFO in upstream Zones L, 1 and 2 will become effective Monday for all LMS-PA Balancing Parties. They will be required to maintain “an actual daily flow rate not exceeding a tolerance of 2% of scheduled quantities or 500 Dth, whichever is greater, for underdeliveries into the system and overtakes from the system.” See the bulletin board for other details.
Transportation Notes
Citing limited operational flexibility and storage injection capability, along with high linepack, Tennessee said a systemwide Imbalance Warning to guard against the creation of excessive positive imbalances will take effect Wednesday. Operators of receipt/delivery points must observe the Imbalance Warning requirements “regardless of their cumulative imbalance position,” the pipeline said.
Transportation Notes
Southern California Gas said Saturday morning it was declaring a systemwide high-linepack OFO on the Intraday 1 nominations cycle for that day. The tolerance for positive daily imbalances was set at 10%. The OFO was continued through Sunday before being allowed to expire Monday.
Transportation Notes
Southern California Gas declared a high-linepack OFO for Saturday, saying it will assess tariff-specified buy-back charges to customers that deliver more than 110% of their actual gas usage on the OFO day. SoCalGas also said it will lose 1.1 Bcf/d of withdrawal capability from Monday through Friday this week as it installs new glycol filters and cleans the dehydration equipment at its Aliso Canyon storage field.