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  2. Sound suppression system - Wikipedia

    en.wikipedia.org/wiki/Sound_Suppression_System

    The system is capable of delivering 4,000 US gallons (15 m 3) per second. [11] [12] Additional storage tanks totaling 100,000 US gallons (380,000 L; 83,000 imp gal) may be added for static fire tests. Water not vaporized is held in a 1,200 square metres (13,000 sq ft) retention basin where it is tested before release. [13]

  3. Water dispenser - Wikipedia

    en.wikipedia.org/wiki/Water_dispenser

    A water dispenser with refill water bottles. A water dispenser, sometimes referred to as a water cooler (if used for cooling only), is a machine that dispenses and often also cools or heats up water with a refrigeration unit. It is commonly located near the restroom due to closer access to plumbing.

  4. Grain per gallon - Wikipedia

    en.wikipedia.org/wiki/Grain_per_gallon

    The grain per gallon (gpg) is a unit of water hardness defined as 1 grain (64.8 milligrams) of calcium carbonate dissolved in 1 US gallon of water (3.785412 L). It translates into 1 part in about 58,000 parts of water or 17.1 parts per million (ppm). Also called Clark degree (in terms of an imperial gallon).

  5. Drilling fluid - Wikipedia

    en.wikipedia.org/wiki/Drilling_fluid

    Low solids mud: These muds contain less than 3–6% solids by volume and weight less than 9.5 lbs/gal. Most muds of this type are water-based with varying quantities of bentonite and a polymer. Emulsions: The two types used are oil in water (oil emulsion muds) and water in oil (invert oil emulsion muds).

  6. Groundwater recharge - Wikipedia

    en.wikipedia.org/wiki/Groundwater_recharge

    Recharge is the primary method through which water enters an aquifer. This process usually occurs in the vadose zone below plant roots and is often expressed as a flux to the water table surface. Groundwater recharge also encompasses water moving away from the water table farther into the saturated zone. [1]

  7. Water-tube boiler - Wikipedia

    en.wikipedia.org/wiki/Water-tube_boiler

    The older fire-tube boiler design, in which the water surrounds the heat source and gases from combustion pass through tubes within the water space, is typically a much weaker structure and is rarely used for pressures above 2.4 MPa (350 psi). A significant advantage of the watertube boiler is that there is less chance of a catastrophic failure ...