TFM10 NFPA 24 UPDATED QUESTIONS AND SOLUTIONS
RATED A+
✔✔Indicating Valve - ✔✔A valve that has components that show if the valve is open or
closed. Examples are outside screw and yoke (OS&Y) gate valves and underground
gate valves with indicator posts.
✔✔Dry-Barrel Hydrant - ✔✔Fire hydrant that has its operating valve located at the base
or foot of the hydrant rather than in the barrel of the hydrant. When operating properly,
there is no water in the barrel of the hydrant when it is not in use. These hydrants are
used in areas where freezing may occur.
✔✔Flow Hydrant - ✔✔The hydrant that is used for the flow and flow measurement of
water during a flow test.
✔✔Private Fire Hydrant - ✔✔A valved connection on a water supply system having one
or more outlets that is used to supply hose and fire department pumpers with water on
private property.
✔✔Public Hydrant - ✔✔A valved connection on a water supply system having one or
more outlets that is used to supply hose and fire department pumpers with water.
✔✔Residual Hydrant - ✔✔The hydrant that is used for measuring static and residual
pressures during a flow test
✔✔Wet-Barrel Hydrant - ✔✔A hydrant used in areas that are not susceptible to
freezing. The barrel of the hydrant is normally filled with water.
✔✔Private Fire Service Mains - ✔✔Hydraulic calculations shall show that the main is
able to supply the total demand at the appropriate pressure.
✔✔Mains Not Supplying Hydrants - ✔✔For mains that do not supply hydrants, pipe
sizes less than 6 in nominal size shall be permitted to be used subject to the following
restrictions.
✔✔The main shall supply only the following types of systems - ✔✔-Automatic sprinkler
systems
-open sprinkler systems
-water spray fixed systems
-foam systems
-standpipe systems
✔✔Tanks shall be installed in accordance with - ✔✔NFPA 22
RATED A+
✔✔Indicating Valve - ✔✔A valve that has components that show if the valve is open or
closed. Examples are outside screw and yoke (OS&Y) gate valves and underground
gate valves with indicator posts.
✔✔Dry-Barrel Hydrant - ✔✔Fire hydrant that has its operating valve located at the base
or foot of the hydrant rather than in the barrel of the hydrant. When operating properly,
there is no water in the barrel of the hydrant when it is not in use. These hydrants are
used in areas where freezing may occur.
✔✔Flow Hydrant - ✔✔The hydrant that is used for the flow and flow measurement of
water during a flow test.
✔✔Private Fire Hydrant - ✔✔A valved connection on a water supply system having one
or more outlets that is used to supply hose and fire department pumpers with water on
private property.
✔✔Public Hydrant - ✔✔A valved connection on a water supply system having one or
more outlets that is used to supply hose and fire department pumpers with water.
✔✔Residual Hydrant - ✔✔The hydrant that is used for measuring static and residual
pressures during a flow test
✔✔Wet-Barrel Hydrant - ✔✔A hydrant used in areas that are not susceptible to
freezing. The barrel of the hydrant is normally filled with water.
✔✔Private Fire Service Mains - ✔✔Hydraulic calculations shall show that the main is
able to supply the total demand at the appropriate pressure.
✔✔Mains Not Supplying Hydrants - ✔✔For mains that do not supply hydrants, pipe
sizes less than 6 in nominal size shall be permitted to be used subject to the following
restrictions.
✔✔The main shall supply only the following types of systems - ✔✔-Automatic sprinkler
systems
-open sprinkler systems
-water spray fixed systems
-foam systems
-standpipe systems
✔✔Tanks shall be installed in accordance with - ✔✔NFPA 22
