A complicated set of regulations aims to keep safe the vast spider’s web of pipelines spanning the US — about 3 million miles, when distribution conduits are factored in. Different regulations apply to the distribution lines that carry gas to homes and businesses than the larger transmission and gathering lines. The regulations applying to each pipeline vary by the content it transports.
In the line of duty
About 500,000 miles of transmission and gathering pipelines stretch across the US. While many are good condition, concerns remain about the structural integrity of older pipelines, as the Pipeline Safety Trust’s Carl Weimer tells Jennifer Pallanich.
16 September 2016 0:00 GMT
Updated
16 September 2016 0:00 GMT