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TSP/TSP Name:  6900518-SOUTHERN NATURAL GAS CO. Critical: Y
Notice Eff Date/Time:  05/16/2019 2:11:31PM Notice End Date/Time:  12/31/2049 9:00:00AM
Post Date:  5/16/2019 2:11:31 PM Notice ID: 703366
Reqrd Rsp:  1 Notice Stat Desc:  INITIATE Prior Notice: 
Subject:  Pipeline Conditions as of 05/17/2019
Notice Text:

The following information indicates Southern's most current system conditions and scheduling restrictions effective for gas day Friday May 17th, 2019 and continuing until further notice.  Any changes to these conditions or scheduling restrictions will be made using individual notices.

Operational Flow Order (OFO)



Transportation: Categories (Limited Operating Capacity Available; At Operating Capacity; At Operating Capacity - Reductions Expected)

South System



SEGMENT 380 (SNG-SESH) – At Operating Capacity –Reductions expected to impact OP services




 Per our Force Majeure posting updated on 05/14/2019. Notice ID #703360. As posted in Critical Notice #703087, SNG experienced an unscheduled station outage at the Fairburn Compressor Station.  Southern and the manufacturer have determined that Unit #2 can remain in-service while a permanent repair is completed.  SNG will now be able to schedule approximately 280 Mdth/d from the TRNSCO/SNG FAIRBURN TO SNG FAYETTE - PIN 50069 until further notice.  As a result of Unit #1 still being out of service, a reduction in IT and Out of Path service may be necessary depending on demand until the Fairburn Compressor Station is back to full operating capacity.

Per our Force Majeure posting updated on 01/30/2019.  Notice ID # 703014.  Southern will not accept nominations at the following PINs until further notice.

#605200 – SABPL/SNG Sabine Vermillion (Receipt Nomination)

#607000 – BOARDWST/SNG Petrologistics Iberville (Receipt or Delivery Nomination)

Effective for 12/3/18 and until further notice, Southern will accept receipt nominations at the following PINs solely for delivery to #605200 – SAGPL/SNG Sabine Vermillion:

#633200 – TERMO/SNG UDP Section 28 – AMOCO

#631900 – WHISKEY/SNG UDP Lake Larose Iberia

#605300 – SEA ROBIN/SNG Erath Vermillion

#632400 – HEC/SNG UDP Bayou Crook Chene Saint


North System:



SEGMENT 30 (ZONE 0/1 BOUNDARY TO ONWARD) – At Operating Capacity




Line-pack Constraints



Line Pack Area Map

Storage Constraints



Type 3/4 OFO Probability (Unlikely (UL); Too Close to Call (TC); Likely (L); Highly Likely (HL)

May 17th 2019 – UL

May 18th 2019 – UL

May 19th 2019 – UL


Type 6 OFO Probability (Unlikely (UL); Too Close to Call (TC); Highly Likely (HL)

May 17th – UL for short and UL for long imbalances

May 18th – UL for short and UL for long imbalances

May 19th – UL for short and UL for long imbalances