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  2. Water flow test - Wikipedia

    en.wikipedia.org/wiki/Water_flow_test

    From this test hydrant, a static pressure and a residual pressure will be measured. The other hydrant, known as the flow hydrant, is usually the nearest hydrant away from the test hydrant. The flow hydrant is fitted with a diffuser device containing a pitot tube that measures stagnation pressure in the middle of the stream while the hydrant is ...

  3. Hydraulic calculation - Wikipedia

    en.wikipedia.org/wiki/Hydraulic_calculation

    The water available is often determined by means of a water flow test, in which one or more fire hydrants are opened and the water pressures and flowrate are measured. Some municipal water jurisdictions may provide an estimate of available water supplies based on hydraulic models.

  4. Water metering - Wikipedia

    en.wikipedia.org/wiki/Water_metering

    A velocity-type meter measures the velocity of flow through a meter of known internal capacity. The speed of the flow can then be converted into a volume of flow to determine the usage. There are several types of meters that measure water flow velocity, including jet meters (single-jet and multi-jet), turbine meters, propeller meters and mag ...

  5. Hydrostatic test - Wikipedia

    en.wikipedia.org/wiki/Hydrostatic_test

    Hydrostatic testing is the most common method employed for testing pipes and pressure vessels. Using this test helps maintain safety standards and durability of a vessel over time. Newly manufactured pieces are initially qualified using the hydrostatic test. They are then revalidated at regular intervals according to the relevant standard.

  6. Fire hydrant - Wikipedia

    en.wikipedia.org/wiki/Fire_hydrant

    Fire hydrant in Charlottesville, Virginia, United States. A fire hydrant, fireplug, firecock (archaic), [1] hydrant riser or Johnny Pump [2] is a connection point by which firefighters can tap into a water supply. It is a component of active fire protection. Underground fire hydrants have been used in Europe and Asia since at least the 18th ...

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  8. Hazen–Williams equation - Wikipedia

    en.wikipedia.org/wiki/Hazen–Williams_equation

    The Hazen–Williams equation is an empirical relationship that relates the flow of water in a pipe with the physical properties of the pipe and the pressure drop caused by friction. It is used in the design of water pipe systems [ 1 ] such as fire sprinkler systems , [ 2 ] water supply networks , and irrigation systems.

  9. How investigators caught, tried convicted 1998 antifreeze killer

    www.aol.com/investigators-caught-tried-convicted...

    The 40-year-old mother of two was found dead in her bed on Dec. 3, 1998, by her husband Mark Jensen. Toxicological testing eventually determined she had ethylene glycol, the main ingredient in ...

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