Flexibility

Tennessee declared an Imbalance Warning Monday to enhance its operational flexibility to manage high imbalances in Zones 5 and 6. The warning requires delivery point operators in those zones to keep actual daily takes out of the system equal to or less than scheduled quantities regardless of their cumulative imbalance position, and receipt point operators to keep actual daily receipts into the system equal to or greater than scheduled quantities regardless of their cumulative imbalance position.

Citing limited operational flexibility to manage imbalances over the long holiday weekend, Tennessee issued a systemwide Balancing Alert for Saturday that required all delivery point operators to keep actual daily takes from the system equal to or greater than scheduled quantities, and all receipt point operators to keep actual daily receipts into the system equal to or less than scheduled quantities. The requirement applied in each case regardless of the operator’s cumulative imbalance position.

Noting that it has limited operational flexibility to manage imbalances due to testing of its Bear Creek storage fields, Tennessee said it would implement Saturday a systemwide Imbalance Warning that requires all delivery point operators to keep actual daily takes out of the system equal to or greater than scheduled quantities and all receipt point operators to keep actual daily receipts into the system equal to or less than scheduled quantities. Both conditions apply regardless of an operator’s cumulative imbalance position. The pipeline also declared a force majeure Thursday night in connection with a leak on its line 3 section downstream of Station 110 near Moorehead, KY. Tennessee said it immediately activated its emergency response plan and dispatched personnel to the scene to close valves and isolate the segment between Main Line Valves 111-3 and 111-3A. Based on current nominations, Tennessee did not anticipate any outage-related service restrictions for the gas days of Thursday and Friday.

Pacific Gas and Electric did not extend a systemwide Stage 2 low-inventory OFO beyond Thursday.

Citing limited operational flexibility to manage imbalances in market-area Zones 5 and 6 along with increased demand there, Tennessee issued an Imbalance Warning for the two zones Wednesday. Regardless of their cumulative imbalance positions, under the warning all delivery point operators are required to keep actual daily takes out of the system equal to or less than scheduled quantities, and all receipt point operators must keep actual daily receipts into the system equal to or greater than scheduled quantities, Tennessee said.

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.

Saying it has limited operational flexibility to manage imbalances in zones 0, L, 1 and 2, and due to the force majeure at Station 214 in Ohio resulting from a potential pipe rupture Thursday night, Tennessee issued an Imbalance Warning Monday requiring all delivery point operators in those zones to keep actual daily takes out of the system equal to or greater than scheduled quantities regardless of their cumulative imbalance position. Similarly, all receipt point operators in the zones were asked to keep actual daily receipts into the system equal to or less than scheduled quantities regardless of their cumulative imbalance position.

Saying it had limited operational flexibility to manage imbalances and due to expected colder temperatures in its Northeast market area, Tennessee issued an Imbalance Warning in Zones 5 and 6 to take effect Monday. See the bulletin board for details on Imbalance Warning conditions. Tennessee also said Thursday it was lifting a force majeure on Line 527A-800 due to the sale of a damaged line section. “However, physical flow at…West Delta Block 109 will remain shut in until the purchasing party repairs the line” to Tennessee specifications, the pipeline said.

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.