Prior to placing newly installed natural gas piping and valves in service, systems must be properly cleaned to remove potentially damaging foreign material that is inherently left behind during ...

If PG&E can’t prove it has set safe pressure levels for a substantial part of its natural gas lines by Tuesday, state regulators may order the utility to undertake an extensive array of pipeline tests ...

The exact cause of the natural gas explosion that killed eight people, injured at least 50, and displaced 100 others when it leveled two buildings in East Harlem in March hasn't been determined, but ...