On Nov. 17, new rules took effect increasing the maximum allowable operating pressure (MAOP) for natural gas transmission pipelines beyond that allowed by previous regulations. The Pipeline and ...

The US Pipeline and Hazardous Materials Safety Administration issued an advisory bulletin to pipeline owners and operators to verify records relating to their pipelines’ maximum operating and ...

A Kennewick police vehicle blocks traffic after a natural gas leak in Kennewick that did not involve a high-pressure line. Tri-City Herald file Cascade Natural Gas has been accused of a lax attitude ...

Pipeline opponents are raising new concerns about the safety of Energy Transfer/Sunoco Logistics’ Mariner East 2x natural gas liquids line, which the company says will have a maximum operating ...

Federal investigators have determined that the natural gas in the pipeline that exploded in San Bruno was running at a higher pressure than the maximum limit PG&E has told the public it maintained. At ...

SAN FRANCISCO (AP) -- California regulators have ordered Pacific Gas & Electric Co. to lower the pressure on some natural gas pipelines in heavily populated areas to 20 percent below their maximum ...