This illustration shows the post-rupture aerial view of the accident area, the location of pipelines across the northwest, rupture of central pipeline, ejected pipe to the south, destroyed, and damaged residences to the southeast. - Google Earth image, NTSB graphic overlay by Mike Hiller.

This illustration shows the post-rupture aerial view of the accident area, the location of pipelines across the northwest, rupture of central pipeline, ejected pipe to the south, destroyed, and damaged residences to the southeast.

Google Earth image, NTSB graphic overlay by Mike Hiller.

The National Transportation Safety Board (NTSB) opened the public docket on March 12 as part of its ongoing investigation of the fatal, August 1, 2019, natural gas transmission pipeline rupture and fire near Danville, Kentucky.

The docket includes more than 3,600 pages of factual information, including reports on pipeline operations, integrity management, metallurgical testing, and emergency response efforts. The docket also includes interview transcripts, photographs, employee training records, and other investigative materials.

The docket contains factual information collected by NTSB investigators. It does not provide a final report, nor does it contain analysis, findings, recommendations, or probable cause determinations. As such, no conclusions about how or why the rupture occurred should be drawn from the information within the docket.

The NTSB will release analysis, findings, recommendations, and probable cause determinations related to the rupture in a final report at a later date.

A 30-inch pipeline owned and operated by Enbridge Inc., ruptured and released natural gas that ignited in the incident, which fatally injured one person and destroyed five residences, damaged 14 other residences, and burned about 30 acres of land, including railroad tracks.

The public docket for this investigation is available online here.

 
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