Transco Pipeline Notice 15979301

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All information here is provided as a service and information is not guaranteed to be accurate. PipeRiv is not responsible for any incorrect information.

TRANSCONTINENTAL GAS PIPE LINE COMPANY, LLC

Critical:	Y
Notice Eff Date:	08/22/2025
Notice Eff Time:	09:04:14 CDT
Notice End Date:
Notice End Time:
Notice ID:	15979301
Notice Stat Desc:	Initiate
Notice Type Desc:	Maint
Post Date:	08/22/2025
Post Time:	09:04:14 CDT
Prior Notice:	0
Reqrd Rsp Desc:	Immediate response required of an operational nature may be required of impacted shippers
Rsp Date:
Rsp Time:
TSP:	007933021
TSP Name:	TRANSCONTINENTAL GAS PIPE LINE COMPANY, LLC

Notice Text:

Subject: Unplanned Maintenance - 190A0 to 195A10 Mainline A Immediate Integrity Dig

This update is being posted to provide the currently estimated return to service date for this unplanned outage.

Due to findings from an integrity assessment performed on Mainline A in April associated with Job #1071384. Transco had to isolate and reduce pressure on a portion of Mainline A between 190A0 and 195A10 near Mile Post 1628.78. Transco has started work to address this finding. The current return to service date is anticipated to be September 3, 2025.

During this period of unplanned maintenance, non-secondary reverse path (NSRP), secondary FT, and interruptible (IT) transactions moving through the location may not be available.

Operating Conditions resulting from this work will require Transco to manage all transportation services north to south through the location listed below. The total quantity available will be contingent on system conditions during the maintenance period, but is anticipated to be limited to the quantity indicated below. Transactions moving south to north through this location will not be impacted.

The receipt-based Throughput Section Boundary (TSB) at mainline MP 1628.78 (Station 190) will be used to manage capacity availability during this unplanned work. An updated Market and Production Area constraint notice will include the location and the available quantity of all transportation services during the indicated period.

TSB Name – Location	Location ID	Flow Direction	Design Capacity (Mdt/d)	Total Quantity Avalable (Mdt/d)
Compressor Station 190 MP 1628.78	9011620	North to South	2,684	See Below

Pipeline Maintenance

Estimated Outage

Total Quantity Avalables Mdt/d

% Available Total

Primary-Firm vs.

Design Capacity

% Cuts (Primary)Potential Shipper Impact (Based on Historical Utilization)   

Immediate Integrity Dig

August 15 – September 2

2,284

85%

0-8%

*% Cuts is an estimate of the impact to shippers based on historical utilization and anticipated volumes during the time of constraint. These amounts are subject to change based on actual nominated firm volumes and changes in the amount of available capacity.

If you have any questions, please contact your Transportation Services Representative.

Transco Pipeline Notice 15979301

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