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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. Testing and inspection of diving cylinders - Wikipedia

    en.wikipedia.org/wiki/Testing_and_inspection_of...

    A hydrostatic test involves pressurising the cylinder to its test pressure (usually 5/3 or 3/2 of the working pressure) and measuring its volume before and after the test. A permanent increase in volume above the tolerated level means the cylinder fails the test and must be permanently removed from service. [3]: sect. 5.7.3

  4. 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 .

  5. Hydrogen leak testing - Wikipedia

    en.wikipedia.org/wiki/Hydrogen_leak_testing

    During the hydrogen sensor test, the object is filled with a mixture of 5% hydrogen/ 95% nitrogen, (below 5.7% hydrogen) is non-flammable (ISO-10156). This is called typically a sniffing test. The handprobe connected to the microelectronic hydrogen sensors is used to check the object. An audiosignal increases in proximity of a leak.

  6. Diving cylinder - Wikipedia

    en.wikipedia.org/wiki/Diving_cylinder

    Water jacket hydrostatic test diagram. A hydrostatic test involves pressurising the cylinder to its test pressure (usually 5/3 or 3/2 of the working pressure) and measuring its volume before and after the test. A permanent increase in volume above the tolerated level means the cylinder fails the test and must be permanently removed from service ...

  7. Lung float test - Wikipedia

    en.wikipedia.org/wiki/Lung_float_test

    The lung float test, also called the hydrostatic test or docimasia, [1] is a controversial autopsy procedure used in determining whether lungs have undergone respiration. It has historically been employed in cases of suspected infanticide to help determine whether or not an infant was stillborn. In the test, lungs that float in water are ...

  8. Water tunnel (hydrodynamic) - Wikipedia

    en.wikipedia.org/wiki/Water_tunnel_(hydrodynamic)

    Because it is a high-speed phenomenon, a special procedure is needed to visualize cavitation. The propeller, attached to a dynamometer , is placed in the inflow, and its thrust and torque is measured at different ratios of propeller speed (number of revolutions) to inflow velocity.

  9. Aquifer test - Wikipedia

    en.wikipedia.org/wiki/Aquifer_test

    Analysis and Evaluation of Pumping Test Data (PDF) (Second ed.). Wageningen, The Netherlands: International Institute for Land Reclamation and Improvement. ISBN 90-70754-20-7. Excellent treatment of most aquifer test analysis methods (but it is a hard-to-find book). Boonstra, J.; Kselik, R.A.L. (2002). SATEM 2002: Software for aquifer test ...