Explosion in San Bruno possibly caused by weak pipeline
SAN BRUNO, Calif. (WKOW) -- Experts say the catastrophic failure of the 54-year-old natural gas pipeline that exploded in flames three weeks ago may have been caused by a weld or weak section of the pipe.
The National Transportation Safety Board allowed photographers to take pictures of the pipeline in the devastated neighborhood where eight people were killed and dozens of homes were destroyed.
Experts say the failure may have started along a weld or in a weakened section where brittle pipes, old welds, corrosion, or widening cracks could have been present.
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