This article outlines guidelines for the testing of high pressure gases utilized in cleanrooms according to the cleanliness limits stated in the FDA cGMP guidelines, the ISO 14644-1 cleanroom ...

How safe are all the old oil and gas pipelines that crisscross the U.S., and does it make sense to pressure-test most of them? The federal Pipeline and Hazardous Material Safety Administration is ...

A 75-year-old Pacific Gas & Electric Co. natural gas pipeline running through a Palo Alto neighborhood is stirring safety concerns. At a city council study session Monday, PG&E officials said there ...

Starting in May, Pacific Gas & Electric plans to begin pressure-testing 150 miles of natural gas pipelines that have similar characteristics to the line that exploded in San Bruno last year. The ...

PG&E on Monday is beginning to pressure test more than a mile of a gas transmission pipeline in Mountain View, a utility spokesman said. The section of pipeline that will be tested is 24 inches in ...

Gainesville Regional Utilities will conduct a routine gas line pressure test this weekend that may cause noise and odors. The test, required every six years by the Public Service Commission, will ...