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May 5, 2016
Investigators have found evidence of corrosion on a natural gas pipeline that exploded in a massive fireball in Pennsylvania last week, scorching trees a quarter-mile away, damaging homes and burning a fleeing homeowner, the federal pipeline safety agency said Wednesday.
The cause of Friday's blast remains unknown, but the corrosion indicates a “possible flaw” in the coating material applied to a pair of welded joints, one at the point of failure and another excavated after the explosion, the Pipeline and Hazardous Materials Safety Administration said in a corrective order issued to the pipeline operator.
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