-Restrictions to Primary In-Path transportation services may be necessary.
SNG - Outage Impact Report
-Restrictions to In-Path transportation services may be necessary.
Seven Day Forecast (updated 05/14/26)
-Restrictions to Interruptible and Out of Path transportation services may be necessary.
-No anticipated impact to transportation services.
Station / Seg
Est Nominal Design Capacity (Thousand Dth)
Monday (5/18)
Tuesday (5/19)
Wednesday (5/20)
Thursday (5/21)
Friday (5/22)
Saturday (5/23)
Sunday (5/24)
Primary Outage(s) that may Impact Throughput
Est. Operational Capacity (Operational Impact) - Thousand Dth
Onward (segment 30)
203
Louisville East (segment 50)
520
150
(370)
Louisville Compressor Station: Scheduled Station Maintenance Proj-4132 (5/19/2026 - 5/20/2026)
Duncanville Lateral (segment 90)
36
Bessemer Calera (segment 120)
100
82
(18)
Bessemer Calera Line north of Helena Regulator: Scheduled Pipeline Maintenance Proj-SNG-38163(PT) (4/1/2026 - 5/21/2026)
Dearmanville (segment 150)
346
White Castle (segment 340)
760
Sesh (segment 380)
506
448
(58)
483
(23)
SESH: Scheduled Maintenance (M) (5/18/2026 - 5/22/2026) SESH: Scheduled Maintenance (M) (5/23/2026)
Gwinville (segment 400)
234
Bay Springs (segment 420)
1,675
1595
(80)
Bay Springs Compressor Station: Scheduled Unit Maintenance Proj-52161 (7/8/2025 - 10/31/2026)
Enterprise (segment 430)
2,306
2236
(70)
Enterprise Compressor Station: Scheduled Unit Maintenance Proj-522212 (3/16/2026 - 6/28/2026)
York
'ZONE 1/2 BOUNDARY'
(segment 440)
2,305
2080
(225)
York Compressor Station: Scheduled Unit Maintenance Proj-52303 (5/21/2026 - 5/23/2026)
Gallion (Segment 440)
2,300
2255
(45)
Gallion Compressor Station: Scheduled Unit Maintenance Proj-5236-8 (4/27/2026 - 5/28/2026)
Selma (segment 460)
2,293
2003
(290)
2128
(165)
Selma Compressor Station: Scheduled Unit Maintenance Proj-52453 (5/18/2026 - 5/20/2026)
Selma Compressor Station: Unscheduled Unit Maintenance Proj-52301 (12/22/2025 - 5/31/2026)
Ellerslie (segment 490)
1,547
1402
(145)
Ellerslie Compressor Station: Scheduled Unit Maintenance Proj-52678-9 (5/18/2026 - 5/21/2026)
Thomaston West (segment 490)
1,535
1520
(15)
Thomaston Compressor Station: Scheduled Unit Maintenance Proj-5272-5 (4/27/2026 - 5/31/2026)
South Atlanta (segment 510)
522
Thomaston East (segment 530)
849
Hall Gate (segment 560)
705
635
Hall Gate Compressor Station: Scheduled Unit Maintenance Proj-52833 (4/20/2026 - 6/7/2026)
South Georgia (segment 650)
127
This document is updated on a weekly basis and outage schedules/impacts are subject to change as the week progresses. Dates posted on DART should be deemed correct in the event of conflicts between DART posted dates and dates on this report.
The impacts sheet are based on steady-state hydraulic models assuming recent operating flows, conditions, and various unit outages.
May 2026 (updated 05/14/26)
Week 1 (5/4 - 5/10)
Week 2 (5/11 - 5/17)
Week 3 (5/18 - 5/24)
Week 4 (5/25 - 5/31)
Primary Outage(s)
Helena Regulator (segment 120)
21
18
(3)
Bessemer Calera Line south of Helena Regulator: Scheduled Pipeline Maintenance, Proj-SNG-38163(PT) (M) (5/25/2026 - 7/4/2026)
Bay Springs Compressor Station: Scheduled Unit Maintenance, Proj-52161 (7/8/2025 - 10/31/2026)
Enterprise Compressor Station: Scheduled Unit Maintenance, Proj-522212 (3/16/2026 - 6/28/2026)
2280
(25)
South Main 4th loop line east of Gallion: Scheduled Pipeline Maintenance(valve replacement), Proj-SNG-5498 (5/29/2026 - 6/2/2026)
Gallion Compressor Station: Scheduled Unit Maintenance, Proj-5236-8 (4/27/2026 - 5/28/2026)
Selma Compressor Station: Unscheduled Unit Maintenance, Proj-52301 (12/22/2025 - 5/31/2026)
Thomaston Compressor Station: Scheduled Unit Maintenance, Proj-5272-5 (4/27/2026 - 5/31/2026)
Hall Gate Compressor Station: Scheduled Unit Maintenance, Proj-52833 (4/20/2026 - 6/7/2026)
June 2026 (updated 05/14/26)
Week 1 (6/1 - 6/7)
Week 2 (6/8 - 6/14)
Week 3 (6/15 - 6/21)
Week 4 (6/22 - 6/28)
500
2235
South Main 2nd loop line east of York: Scheduled Pipeline Maintenance, Proj-SNG-36214 (6/12/2026 - 6/21/2026)
Auburn (segment 460)
1,953
1848
(105)
1793
(160)
South Main loop line east of Auburn: Scheduled Pipeline Maintenance(remediation), Proj-SNG-20457(2) (6/13/2026 - 6/21/2026)
South Main loop line east of Auburn: Scheduled Pipeline Maintenance(remediation), Proj-SNG-22003(1) (6/22/2026 - 6/28/2026)
Thomaston Compressor Station: Scheudled Unit Maintenance, Proj-52722 (6/1/2026 - 7/5/2026)
East/South Wrens (segment 560)
680
590
(90)
Wrens Compressor Station: Scheduled Unit Maintenance, Proj-52885 (6/8/2026 - 6/10/2026)
July 2026 (updated 05/14/26)
Week 1 (6/29 - 7/5)
Week 2 (7/6 - 7/12)
Week 3 (7/13 - 7/19)
Week 4 (7/20 - 7/26)
Week 5 (7/27 - 8/2)
Bessemer Calera loop line south of Helena Regulator: Scheduled Pipeline Maintenance, Proj-SNG-38163(PT) (M) (7/10/2026 - 8/24/2026)
Tarrant (segment 130)
563
438
(125)
North Main line east of Providence: Scheduled Pipeline Maintenance(remediation), Proj-SNG-20462/SNG-21973 (7/6/2026 - 8/14/2026)
Tarrant Compressor Station: Scheduled Unit Maintenance(panel), Proj-41527-8-9-10-11 (7/6/2026 - 9/13/2026)
2126
(180)
Enterprise Compressor Station: Scheduled Unit Maintenance, Proj-522215 (6/29/2026 - 8/2/2026)
1808
South Main loop line east of Auburn: Scheduled Pipeline Maintenance(remediation), Proj-SNG-22003(2) (6/29/2026 - 7/3/2026)
This document is updated on a weekly basis and outage schedules/impacts are subject to change as the week progresses.
Dates posted on DART should be deemed correct in the event of conflicts between DART posted dates and dates on this report. The impacts sheet are based on steady-state hydraulic models assuming recent operating flows, conditions, and various unit outages.
August 2026 (updated 05/14/26)
Week 1 (8/3 - 8/9)
Week 2 (8/10 - 8/16)
Week 3 (8/17 - 8/23)
Week 4 (8/24 - 8/30)
Bessemer Calera loop line south of Helena Regulator: Scheduled Pipeline Maintenance,
Proj-SNG-38163(PT) (M) (7/10/2026 - 8/24/2026)
North Main line east of Providence: Scheduled Pipeline Maintenance(remediation),
543
(20)
Proj-SNG-20462/SNG-21973 (7/6/2026 - 8/14/2026)
Bay Springs Compressor Station: Scheduled Unit Maintenance,
Proj-52161 (7/8/2025 - 10/31/2026)
Ellerslie Compressor Station: Scheduled Station Maintenance,
1317
(230)
Proj-5267 (8/18/2026 - 8/20/2026)
Dates posted on DART should be deemed correct in the event of conflicts between DART posted dates and dates on this report.
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