The buried pipe failed as it was undergoing hydrostatic testing, which involves running highly pressurized water through it to ensure there are no leaks or flaws, a Mountain Valley spokeswoman said.

A new report says a manufacturer’s defect caused a section of the Mountain Valley Pipeline to fail during testing earlier this year.

Platte Pipe Line's use of a new inspection tool to identify seam-weld defects revealed that the transverse field inspection (TFL) tool had less impact on pipeline operations and ...

Enbridge's successful high-pressure water test of one of its twin oil pipelines in the Straits of Mackinac indicates "the underwater pipe appears to be robust," according to an independent ...

An independent report says the test failure of the Mountain Valley Pipeline on May 1 resulted from a manufacturer defect and not corrosion.

Hydrostatic pressure testing involves filling a section of pipe with water, pressurizing it to a higher level than it would operate with natural gas, then monitoring it for eight hours, Molica said.

Update: PG&E completed its natural gas transmission pipeline hydrostatic testing on September 1. UCSC and the surrounding area service were returned to normal operations. PG&E sends its appreciation ...

A small leak has been detected in Palo Alto on the same natural gas pipeline that exploded with deadly consequences last year in San Bruno, officials with Pacific Gas and Electric Company said Friday.

An independent report says the test failure of the Mountain Valley Pipeline in May resulted from a manufacturer defect and not corrosion.