Citing “dramatically decreasing temperatures,” Northern Natural Gas declared a System Overrun Limitation for all market-area zones starting Tuesday.

Due to an unplanned loss of about 100 MMcf/d of production from Sable Offshore Energy Project (SOEP) that began Friday and lasted partially into Monday, Maritimes & Northeast U.S. (M&N) required shippers “to schedule receipts commensurate with expected deliveries, meter operators are required to flow at scheduled volumes and imbalance gas will not be allowed to be taken off of M&N’s system.” It also was not allowing due-shipper imbalance paybacks or creation of due-pipe imbalances. A pipeline spokeswoman said SOEP volumes had returned to the normal level of more than 400 MMcf/d Monday.

East Tennessee Natural Gas, saying it was experiencing large due-pipe imbalances, will issue a Balancing Alert OFO for “certain LMSMA parties,” effective at the start of Tuesday’s gas day. Penalties will apply to shippers with negative imbalances exceeding 2% of daily scheduled quantities or 500 Dth, whichever is greater.

Tennessee reported being able to identify a leak in its TTT Pipeline segment offshore Louisiana and said repairs are under way (see Daily GPI, Jan. 28). Due to weather conditions, Tennessee does not expect full repair of the leak until at least Friday (Feb. 1). Last Friday evening it added two more Eugene Island meters to a list of those required to shut in by the like, bringing the total of affected platforms to 13.

NOVA said it experienced a line break Sunday morning on the 16-inch diameter Flat Lake Lateral Extension and has isolated the line. The Prosperity and Flat Lake Lateral meter stations were shut in until the break is repaired; the duration of the outage was indeterminate, NOVA said. Typical flow from the two meter stations is 1.6 MMcf/d.

©Copyright 2008Intelligence Press Inc. All rights reserved. The preceding news reportmay not be republished or redistributed, in whole or in part, in anyform, without prior written consent of Intelligence Press, Inc.