Using dry nitrogen to pressure test a system is a very effective method of verifying a system is leak-free. In fact, I believe it is more reliable than using a standing vacuum test typically performed ...

Starting July 29, residents and businesses north of Jackson Street are advised that Dominion Gas will be performing a gas pressure hydrotest project in Painesville and Painesville Township, according ...

Coal and gas outburst is one of the geological disasters that seriously threaten the safety of coal mines production. In recent years, with the increase of mining depth, outbursts become frequent. To ...

To explore gas pressure of coal samples under uniaxial compression condition the influence of the acoustic emission features, based on the uniaxial compression acoustic emission monitoring test, the ...