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  2. Hydrostatic test - Wikipedia

    en.wikipedia.org/wiki/Hydrostatic_test

    A hydrostatic test is a way in which pressure vessels such as pipelines, plumbing, gas cylinders, boilers and fuel tanks can be tested for strength and leaks. The test involves filling the vessel or pipe system with a liquid, usually water, which may be dyed to aid in visual leak detection , and pressurization of the vessel to the specified ...

  3. Tracer-gas leak testing - Wikipedia

    en.wikipedia.org/wiki/Tracer-gas_leak_testing

    Bubble test in water 10 −2: Pressure decay 10 −2: Vacuum decay 10 −2: Acoustic emission detectors: 10 −3: Bubble test in soapy water 10 −4: Gas-specific thermal conductivity detector 10 −5: Halogen detector 10 −5: Photoacoustic spectroscopy: 10 −6: Hydrogen sniffer 10 −6: Residual gas analyser: 10 −7: Dye penetrant: 10 −8 ...

  4. Surge control - Wikipedia

    en.wikipedia.org/wiki/Surge_control

    A highly accurate and reliable approach to controlling the nitrogen pressure on a gas-loaded surge relief valve is to use an electronic control system to add and vent nitrogen pressure from the gas-loaded surge relief valve. This technique assures the required set point accuracy and repeatability needed in this critical application.

  5. Hydrogen leak testing - Wikipedia

    en.wikipedia.org/wiki/Hydrogen_leak_testing

    Hydrogen leak testing is the normal way in which a hydrogen pressure vessel or installation is checked for leaks or flaws. This usually involves charging hydrogen as a tracer gas into the device undergoing testing, with any leaking gas detected by hydrogen sensors. [1] Various test mechanisms have been devised.

  6. Maximum allowable operating pressure - Wikipedia

    en.wikipedia.org/wiki/Maximum_allowable...

    Maximum Allowable Operating Pressure (MAOP) is a pressure limit set, usually by a government body, which applies to compressed gas pressure vessels, pipelines, and storage tanks. For pipelines, this value is derived from Barlow's Formula , which takes into account wall thickness, diameter, allowable stress (which is a function of the material ...

  7. Schlenk line - Wikipedia

    en.wikipedia.org/wiki/Schlenk_line

    The inert-gas line is vented through an oil bubbler, while solvent vapors and gaseous reaction products are prevented from contaminating the vacuum pump by a liquid-nitrogen or dry-ice/acetone cold trap. Special stopcocks or Teflon taps allow vacuum or inert gas to be selected without the need for placing the sample on a separate line. [3]

  8. Pressure vessel - Wikipedia

    en.wikipedia.org/wiki/Pressure_vessel

    The ASME definition of a pressure vessel is a container designed to hold gases or liquids at a pressure substantially different from the ambient pressure. [2]The Australian and New Zealand standard "AS/NZS 1200:2000 Pressure equipment" defines a pressure vessel as a vessel subject to internal or external pressure, including connected components and accessories up to the connection to external ...

  9. Water flow test - Wikipedia

    en.wikipedia.org/wiki/Water_flow_test

    A process to perform a water flow test is explained in the model fire codes as published by NFPA (National Fire Protection Association). If a water supply source is considered weak compared to what is required by the sprinkler system design hydraulic calculation, the water pressure can be boosted by means of a fire pump.

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