After ending a previous systemwide Stage 2 high-inventory OFO Thursday, Pacific Gas and Electric issued a new one for Friday. Penalties again were set at $1/Dth for exceeding a 12% tolerance on positive daily imbalances.

With system weighted average temperatures that had been just above freezing Wednesday and Thursday rising back to their normal average for this time of year of 44 going into the weekend, Northern Natural Gas declared System Underrun Limitations in all market-area zones for Friday through Sunday.

Recalling a recent notice to shippers indicating reduced operating flexibility due to current system conditions and reduced storage injection availability due to high inventory levels, Transco said a systemwide Imbalance OFO with minimum penalties of $50/Dth per day for positive imbalances exceeding 10% or 1,000 Dth, whichever is greater, will be implemented Saturday.

Citing current conditions, forecasted demand and scheduled supply, Southern said it was "highly likely" that it would implement a Type 6 OFO for long imbalances on the gas days of Saturday and Sunday.

ANR said effective Monday until further notice it will not allow any daily storage injection activity into DDS or MBS accounts. Also, it reminded customers that all such accounts must have their inventory levels at or below the allocated ending balance on Sunday (Oct. 31). ANR also said it was not allowing Overrun injections into FSS accounts starting Monday. Overrun injections are nominated quantities that are above the current Maximum Daily Injection Quantity then in effect, the pipeline explained.

Florida Gas Transmission (FGT) will begin a scheduled 30 days of pipe and compressor maintenance/upgrades Monday between Compressor Stations 11 and 15. During the work FGT will schedule up to 1,900,000 MMBtu/d through Station 12; it normally schedules up to 2,150,000 MMBtu/d there. Also starting Monday, similar work (also for 30 days) will be performed between Compressor Stations 24 and 27. FGT will schedule up to 750,000 MMBtu/d through Station 26 (Southwest group) in this period; it normally schedules up to 950,000 MMBtu/d through Station 26.

TGT had expected earlier this week to complete unscheduled maintenance on the Sharon Carthage system on the discharge side of the Haughton (LA) Compressor Station by the start of Thursday's gas day (see Daily GPI, Oct. 28), but said Thursday the work has been extended for an undetermined time.

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