SALEM TOWNSHIP, Pa. — 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.
Houston-based Spectra Energy Corp. said a 2012 pipeline inspection did not reveal any sections that required repair. Spectra and federal officials did not address questions about the safety of other sections of the pipeline in light of the possibly defective coating.
The coating material, which is supposed to protect pipelines from corrosion, was applied when the 30-inch pipeline was installed in 1981 "following construction welding procedures in the field at the time," the agency said.
Decades ago, that coating was an "accepted and preferred method of coating" the pipeline weld joints, Spectra spokesman Creighton Welch said in an email.
The company conducts a high-tech pipeline inspection every seven years, as well as routine field surveys of corrosion prevention systems, he added.
The explosion in Salem Township, Westmoreland County, destroyed one home, damaged three others and prompted evacuations. The owner of the leveled home, 26-year-old James Baker, is hospitalized with burns to more than 50 percent of his body.
Salem Township Supervisor Kerry Jobe gave an update Wednesday on Baker’s condition.
“Apparently his condition isn't as well as we hoped. The burns are a lot worse than anticipated, and he's going to continue to have surgeries and they're going to have some tough decisions to make in the future about what's going to happen,” Jobe said.
The township is holding a clothing and fundraising drive for Baker and his wife. A community meeting is also being planned for some time next week to help address concerns from neighbors.
The enormous blast propelled a 25-foot section of pipe about 100 feet from the epicenter and produced a crater that measured 30 feet wide, 50 feet long and 12 feet deep, according to documents released Wednesday.
The damaged pipeline and three nearby pipelines are out of service while the inquiry continues.
The pipeline safety agency ordered Spectra to inspect the pipeline in the vicinity of the blast for "corrosion, coating condition" and other damage and make repairs as necessary, and to take other measures.
Channel 11 News contributed to this report.
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Associated Press
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