Transco Pipeline Notice 15740435

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TRANSCONTINENTAL GAS PIPE LINE COMPANY, LLC

Critical:	Y
Notice Eff Date:	06/09/2025
Notice Eff Time:	11:09:47 CDT
Notice End Date:
Notice End Time:
Notice ID:	15740435
Notice Stat Desc:	Initiate
Notice Type Desc:	Maint
Post Date:	06/09/2025
Post Time:	11:09:47 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: Job #153798 Station 175 to 170 MLC ILI Runs Planned Outage and Maintenance Summary

Transco will be performing necessary pipeline integrity assessments associated with Job #153798 on its 2025 Planned Outage and Maintenance Summary. This maintenance activity will impact the availability of transportation services moving north to south through Compressor Station 175.

The specific dates that will be impacted are subject to change, but the current schedule is outlined below.

Gauge Tool – 7/8

Cleaner Tool – 7/10

Combo GEO-MFL Tool – 7/15

CMFL Tool – 7/17

EMAT Tool – 7/22

During this period of planned maintenance, non-secondary reverse path (NSRP), secondary FT, and interruptible (IT) transactions moving south to north through the location may not be available. On days that maintenance is not occurring, the availability of transportation services moving north to south will not be impacted.

Operating Conditions resulting from this work will require Transco to manage all transportation services moving north to south through the TSB 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 milepost 1521.82 (Near Station 175) will be used to manage capacity availability including any required changes to the expected total quantity available during this planned work. An updated Market and Production Area constraint notice will include the location and the available quantity of primary-firm transportation services during the indicated period.

TSB Name - Location	Location ID	Flow Direction
Mainline MP 1521.82	9012963	North to South

Estimated Outage Dates

Design Capacity (Mdt/d)

Total Primary-Firm Qty Available (Mdt/d)

% Available Total Primary-Firm vs Design Capacity

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

7/8

7/10

7/15

7/17

7/22

2,600

1,850

70%

5-10%

*% Cuts (Primary) is an estimate of the impact to primary firm 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 15740435

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