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Fire Apparatus Driver/Operator Chapter 4
Terms in this set (34)
Pertaining to, related to, similar to, or dissolved in water.
Relatively small-diameter underground pipes that deliver water to local users within a neighborhood.
An arrangement of pipes that is permanently connected to a water source other than a piped, pressurized water supply system; it provides a ready means of water supply for firefighting purposes, and takes advantage of the drafting capability of fire department pumpers.
The most common type of hydrant; it has a control valve below the front line between the foot piece and the barrel. A drain is located at the bottom of the barrel above the control valve seat for proper drainage after operation.
An above-ground water storage tank the is designed to maintain pressure on a water distribution system.
Elevated water storage tower
Forward pressure at a discharge opening while water is flowing.
The result of the interaction between the hose or pipe and the flowing water, which leads to a reduction in flow pressure at the point of discharge.
A water distribution system that depends on the gravity to provide the required pressure. The system storage is usually located at a higher elevation than the end users of the water.
The mineral content of the water; it usually consists of calcium and magnesium, but can also include iron, aluminum, and manganese.
The energy required to transform a given quantity of substance into a gas.
Heat of vaporization
The energy possessed by an object as a result of its motion.
A government-owned and operated water distribution system that is designed to deliver potable water to end users for domestic, industrial, and fire protection purposes.
Municipal water system
The observed static pressure in a water distribution system during a period of normal demand.
Normal operating pressure
A type of gauge that is used to measure the velocity pressure of water that is being discharge from an opening. It is used to determine the flow of water from a hydrant.
The energy that an object has stored up as a result of its position or condition. A raised weight and a coiled spring have this type of energy.
The largest-diameter pipe in a water distribution system, which carries the largest amount of water.
A privately owned water system that operates separately from the municipal water system.
Private water system
A water storage facility
The pressure that exists in the distribution system, measured at the residual hydrant at the time the flow readings are taken at the flow hydrant.
A small-diameter pipe that connects the primary feeder to the distributors.
Any valve that can be used to shut down water flow to a water user or system.
The amount of heat energy required to raise the temperature of a substance. These values are determined experimentally and then made available in tabular form.
Specific heat index
The pressure in a water pipe when there is no water flowing.
A water source such as a pond, river, stream, or other body of water that is not under pressure.
Static water source
The elastic-like force at the surface of a liquid, which tends to minimize the surface area.
The amount of particulate matter suspended in water.
A liquid substance capable of dissolving other substances, which does not result in the first substance changing its states when forming the solution.
The quantity of water flowing; usually measured in a gallons per minute.
The amount of water flowing through pipes, hoses, and fittings, usually expressed in gallons per minute.
The surge of pressure caused when a high-velocity flow of water is abruptly shut off. The pressure exerted by the flowing water against the closed system can
A generic term for any underground water pipe.
The application of force by one object against another created when water is forced through the distribution system.
A source of water that provides the flows and pressures required by a water-based fire protection system.
A hydrant used in areas that are not susceptible to freezing. The barrel of this type of hydrant is normally filled with water.
THIS SET IS OFTEN IN FOLDERS WITH...
Fire Apparatus Driver/Operator Chapter 5
Fire Apparatus Driver/Operator Chapter 12
Fire Apparatus Driver/Operator Chapter 13
Fire Apparatus Driver/Operator Chapter 11
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