Enbridge Inc. was continuing to work Friday on a plan with federal and state regulators to restore some service as early as Monday on a segment of the Texas Eastern Transmission (Tetco) system in southeast Ohio that exploded on Jan. 21.
Tetco said on its bulletin board that while a variety of factors could potentially change the schedule, crews were aiming to restore as much as 1 Bcf/d of north to south capacity through the system’s Berne compressor station between Monday and Wednesday (Jan. 28-30).
The explosion ripped through Tetco’s Line 10 just south of the Berne compressor in Noble County near Summerfield, OH, about 50 miles southwest of Wheeling, WV.
Two other lines in the right-of-way make up the pipeline’s 30-inch diameter system in the area, Line 15 and Line 25. The company has isolated those two lines to inspect their integrity so they can be brought back online. Tetco said late Thursday it was taking steps to restore service on Line 25 “as soon as safely possible.”
The blast, which Enbridge said injured two residents and damaged three nearby homes, has cut flows on the system by about 1.4 Bcf/d and by 2.2 Bcf/d compared to the 30-day maximum, according to Genscape Inc.
Tetco restricted north to south capacity through the Berne compressor to zero a day after the incident. Genscape analysts said Friday “we have seen reported flow revisions indicating 130 MMcf/d of southbound flows on the Berne 30-inch compressor Jan. 23 despite the notice indicating net zero flows, and a northbound flow reversal” as of Friday’s early cycles, “which could be revised.”
Meanwhile, Enbridge said late Thursday the company is “sensitive to the impact this has had on the affected families and local community and will continue to support their needs while keeping them informed of construction activities.”
An on-site investigation continues and evidence collection is underway in coordination with regulators to determine the cause of the incident. The site is also being prepared for construction repairs, Enbridge said.
“No incident is acceptable,” the company said. “Safety is a fundamental principle in everything we do and we are ensuring all construction and restoration operations are completed safely.”
The latest blast follows another on the system in 2016, when the Penn-Jersey Line in Westmoreland County, PA, in Tetco’s M3 Zone exploded, toppling trees, razing one house, damaging others and sending one resident to the hospital. It also came after an Enbridge line in British Columbia exploded late last year.