Lifting

Southern California Gas kept a high-linepack OFO that it had implemented Friday in effect through Monday before lifting it Tuesday.

ANR said Friday morning it had completed unplanned maintenance at Havensville Compressor Station and was lifting the associated Southwest Mainline capacity reduction (see Daily GPI, Dec. 28) effective with the next intraday nominations cycle.

Pacific Gas & Electric is lifting Friday a systemwide high-inventory OFO that had been implemented Wednesday.

Pacific Gas & Electric kept a systemwide high-inventory OFO in effect through Sunday before lifting it Monday. Then the utility declared a customer-specific OFO for Tuesday. PG&E also noted late last week that it has suspended pipeline balancing storage injections “because the entire inventory reserved for pipeline balancing has been exceeded.” As a result, the utility’s California Gas Transmission (CGT) system is looking at calling late afternoon OFOs as a way to manage ongoing overdeliveries that exceed demand. “When an OFO is necessary, CGT makes every effort to call the OFO by 7:30 a.m. Pacific time the day prior to the gas flow day, using a forecast of demand and scheduled supply. However, the forecast of system conditions at 7:30 a.m. does not always indicate the necessity for an OFO. When subsequent changes in system demand and/or scheduled supply necessitate some inventory control action, CGT’s two options are either to call an OFO later in the day or hold the interconnect constraints in a nomination cycle to the constraints which existed in a previous cycle. Customers have indicated a strong preference for CGT to call OFOs rather than holding to interconnect constraints. Therefore, we will consider calling an OFO as late as 6 p.m. Pacific time for the following gas day. We anticipate that calling an OFO, if deemed necessary, after reviewing the evening cycle nominations may reduce the need to hold the interconnect constraints to control pipeline system inventory.”

After lifting a systemwide Stage 3 high-inventory OFO Wednesday, Pacific Gas and Electric issued an identical OFO for Thursday. The order set penalties of $5/Dth for exceeding a 5% tolerance on positive daily imbalances.

Southern California Gas kept a high-linepack OFO issued for Saturday in place through Sunday before lifting it Monday.

Effective with the start of Thursday’s gas day MRT is lifting the System Protection Warning that was implemented Wednesday.

Florida Gas Transmission kept an Overage Alert Day that was implemented last Thursday in effect through Saturday before lifting it Sunday. Then, because linepack had accumulated to high levels, the pipeline alerted customers Monday that it might be required to declare an Underage Alert Day on Tuesday.

Southern California Gas kept last Thursday’s high-linepack OFO in place through Saturday before lifting it for Sunday.