TFM10 NFPA 24 QUESTIONS AND ANSWERS SET
A+
✔✔Hydraulically Calculated Water Demand Flow Rate - ✔✔The waterflow rate for a
system or hose stream that has been calculated using accepted engineering practices.
✔✔Residual Pressure - ✔✔The pressure that exists in the distribution system,
measured at the residual hydrant at the time the flow readings are taken at the flow
hydrants.
✔✔Static Pressure - ✔✔The pressure that exists at a given point under normal
distribution system conditions measured at the residual hydrant with no hydrants
flowing.
✔✔Pressure-Regulating Device - ✔✔A device designed for the purpose of reducing,
regulating controlling, or restricting water pressure. Example includes pressure reducing
valve, pressure control valves, and pressure-restricting devices.
✔✔Private Fire Service Main - ✔✔Private fire service main, as used in this standard, is
that pipe and its appurtenances on private property (1) between a source of water and
the base of the system riser for water-based fire protection systems, (2) between a
source of water and inlets to foam-making systems, (3) between a source of water and
the base elbow of private hydrants or monitor nozzles, and (4) used as fire pump
suction and discharge piping, (5) beginning at the inlet side of the check valve on a
gravity or pressure tank
✔✔Pumper Outlet - ✔✔The hydrant outlet intended for use by fire departments for
taking supply from the hydrant for pumpers
✔✔Rated Capacity - ✔✔The flow available from a hydrant at the designated residual
pressure (rated pressure) either measured or calculated
A+
✔✔Hydraulically Calculated Water Demand Flow Rate - ✔✔The waterflow rate for a
system or hose stream that has been calculated using accepted engineering practices.
✔✔Residual Pressure - ✔✔The pressure that exists in the distribution system,
measured at the residual hydrant at the time the flow readings are taken at the flow
hydrants.
✔✔Static Pressure - ✔✔The pressure that exists at a given point under normal
distribution system conditions measured at the residual hydrant with no hydrants
flowing.
✔✔Pressure-Regulating Device - ✔✔A device designed for the purpose of reducing,
regulating controlling, or restricting water pressure. Example includes pressure reducing
valve, pressure control valves, and pressure-restricting devices.
✔✔Private Fire Service Main - ✔✔Private fire service main, as used in this standard, is
that pipe and its appurtenances on private property (1) between a source of water and
the base of the system riser for water-based fire protection systems, (2) between a
source of water and inlets to foam-making systems, (3) between a source of water and
the base elbow of private hydrants or monitor nozzles, and (4) used as fire pump
suction and discharge piping, (5) beginning at the inlet side of the check valve on a
gravity or pressure tank
✔✔Pumper Outlet - ✔✔The hydrant outlet intended for use by fire departments for
taking supply from the hydrant for pumpers
✔✔Rated Capacity - ✔✔The flow available from a hydrant at the designated residual
pressure (rated pressure) either measured or calculated
