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    Tools > Informational Postings > Transco Pipeline > Critical Notices > Notice 15861111

    Transco Pipeline Notice 15861111

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    TRANSCONTINENTAL GAS PIPE LINE COMPANY, LLC
    Critical: Y
    Notice Eff Date: 07/16/2025
    Notice Eff Time: 08:36:23 CDT
    Notice End Date:
    Notice End Time:
    Notice ID: 15861111
    Notice Stat Desc: Supersede
    Notice Type Desc: Maint
    Post Date: 07/16/2025
    Post Time: 08:36:23 CDT
    Prior Notice: 15834790
    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: Update - Station 155 Planned Outage and Maintenance Summary

    Due to a construction delay this outage has been extended. See below for updated dates.  

    Transco will be performing necessary compliance maintenance associated with Jobs #909843, #148828, #148835, #909850, #148831 and #43687 on its 2025 Planned Outage and Maintenance Summary. Due to operational reasons the original pipeline isolation plans for the outage had to be modified, Transco has revised the outage dates and the anticipated impacts. The maintenance outages will impact the availability of primary-firm transportation services moving north to south through Compressor Station 155. The current schedule is April 29, 2025 through  July 16 July 19, 2025.  During this period of planned maintenance, non-secondary reverse path (NSRP), secondary FT, and interruptible (IT) transactions moving north to south through the location listed below may not be available.

    The receipt-based Throughput Section Boundary (TSB) at MAINLINE MP 1326 will be used to manage capacity availability including any required changes to the expected total quantities available during this planned work indicated below. An updated Market and Production Area constraint notice will include the location and the available quantity of primary-firm transportation services during the indicated periods. 

    TSB Name - Location

    Location ID

    Flow Direction

    MAINLINE MP 1326 TSB

     9012983

    North to South
     

     

     

     

    Estimated Outage

    Design Capacity (Mdt/d)

    Total Primary-Firm Quantity Available (Mdt/d)

    % Available Total Primary-Firm vs Design Capacity

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

    April 29 – May 5

    2,460

    2,460

    100%

    N/A

    May 6 – May 15

    2,460

    2,100

    85%

    0-10%

    May 16 – May 26 22

    2,460

    1,950

    79%

    5-15%

    May 27 23– June 3

    2,460

    2,050

    83%

    5-10%

    June 4 - July 16 July 19

    2,460

    2,000

    81%

    5-15%
     

     

     *% Cuts (Primary) 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 volumes and changes in the amount of available capacity.

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

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