16 pressure drop alerts associated with pipeline explosion

A preliminary investigative report from the National Transportation Safety Board says Columbia Gas received 16 pressure drop alerts before it learned one of its natural gas pipelines had exploded in Kanawha County.

The NTSB report, issued Wednesday, contains a lot of the same information investigators released to the public in the days following last month’s blast and fire near Sissonville.

About 20-feet of the 21-inch in diameter pipe was separated and ejected in the blast landing 40-feet from its original location. The fire destroyed three homes, damaged several others and melted a section of pavement along Interstate 77.

A link to the full preliminary report can be found at: http://go.usa.gov/4grH

The report, also repeated previously released information that the pipeline, installed in 1967, had thinned from corrosion.

Columbia Gas did not have an alarm in its control room notifying it of the blast but a call came in from Cabot Gas which had a worker near the explosion site.

Between the explosion and that call the NTSB report says there were “16 pressure drop alerts on the Supervisory Control and Data Acquisition (SCADA) system from Lanham Compressor Station (Lanham) 4.7 miles upstream of the rupture. The alerts indicated discharge pressure dropping on all three pipelines in SM80 system (Line SM-80, Line SM-86, and Line SM-86Loop).”

Columbia released a response Wednesday afternoon:

Columbia_response 1-16

The NTSB is continuing its investigation. No official cause has been determined.

Earlier this week the parent of Columbia Gas, NiSource, sent a check to the Kanawha County Commission paying more than $231,000 in local and state expenses in connection with the explosion. The company has also been working with residents who were impacted.

Columbia has not yet reenergized the line that ruptured. It’s been working with federal and state agencies on a corrective order that was previously issued. Kanawha County officials say they want to make sure the entire pipeline is safe before its used again.


More News

CAMC operates in crises mode like all other hospitals in W.Va.
CEO Dave Ramsey says the impact Covid is having on the community is directly reflected in the impact its having on the hospital staff.
January 27, 2022 - 3:28 pm
Nucor chief highlights West Virginia mill project during call with investors
Chief says West Virginia mill will have some of the highest capabilities and one of the lowest carbon footprints of any facility in the world.
January 27, 2022 - 2:42 pm
Murder trial begins in Beckley
Davide Hudson is accused of killing Amber Meadows at a hotel located on Harper Road.
January 27, 2022 - 2:26 pm
WVU makes coronavirus protocol adjustments
Mask policy extended through Feb. 25.
January 27, 2022 - 2:19 pm

Your Comments