Linepack

Northern Natural Gas extended a System Underrun Limitationcaused by high linepack at least through Saturday’s gas day. TheSUL began Friday (see Daily GPI, Nov. 11).

Saying it expects high system linepack due to reduced demand andlimited storage injection capability to continue through theweekend, Tennessee is issuing an OFO Action Alert effective withSaturday’s gas day for its entire system. Under the alert, shipperswill be penalized for daily positive imbalances that exceed a 2%tolerance range (or 500 Dth, whichever is greater) from scheduledquantities. Penalties will not apply to customers who underdeliverinto the system or overtake from it, or to customers under RateSchedule LMS-MA who have elected the Storage Swing Option or Swingon Storage. Tennessee expects the alert to remain in effect intonext week.

Both El Paso and Florida Gas Transmission lifted low-linepackOFOs Friday (see Daily GPI, Oct. 22).

Both Florida Gas Transmission and Pacific Gas & Electricextended low-linepack OFOs (see Daily GPI, Oct. 5)-FGT through Tuesday and PG&Ethrough today. Neither changed the OFO conditions. PG&E posts OFOsa day in advance, while FGT usually re-evaluates system conditionseach morning before deciding whether to declare one for that gas day.

Fearing excessive linepack over the weekend, Northern NaturalGas implemented a System Underrun Limitation in all market-areazones for the gas days of Saturday and Sunday. The SUL will endtoday.

Northern Natural Gas had a System Underrun Limitation in effectTuesday for all market-area zones to guard against excessivelinepack.

Northwest continued Tuesday to ban any on-system balancing,warning that regional temperatures are getting warmer and linepack”is very high.” Shippers were asked to refrain from banking gas onthe system in order to avoid a potential entitlement.

Florida Gas Transmission said Thursday it was experiencing”extremely high” linepack and that Operational Flow Orders would beissued to customers taking less than scheduled volumes. Otheroperational tools such as an Alert Day notice were also beingconsidered, the pipeline said.