ESTUDYR
NFPA 24 TEST (TFM10) UPDATED EXAM WITH MOST TESTED
QUESTIONS AND ANSWERS | GRADED A+ | ASSURED SUCCESS
WITH DETAILED RATIONALES
1
This standard shall apply to piping intended to carry water for what?
A. Municipal drinking-water mains
B. Sanitary sewer mains
C. Private fire service mains ✅
D. Stormwater drains
Rationale: The rules you posted are specific to private fire service mains — piping intended to provide
water for fire protection, not general utility systems.
2
Working plans for installation or remodeling of fire-service equipment must be submitted for approval
to the:
A. Local contractor association
B. Building owner
C. Authority Having Jurisdiction (AHJ) ✅
D. Nearest fire station
Rationale: The AHJ (authority having jurisdiction) is the entity responsible for reviewing and approving
plans before installation or remodeling.
3
Which statement about pressure-regulating devices in fire service piping is correct?
A. They must be installed at every hydrant.
B. They are required on private fire service mains.
C. Pressure-regulating devices shall not be used ✅
D. They are optional per the installer’s preference.
Rationale: Pressure regulation can reduce available fire-fighting pressure; the standard prohibits using
pressure-regulating devices in these mains unless specifically allowed.
, ESTUDYR
4
Which device shall not be installed in the piping from the fire-department connection (FDC) to the fire
service main?
A. Pressure gauge
B. Control valves (shutoff valves) ✅
C. Access fitting
D. Permanent indicator plate
Rationale: Control valves between the FDC and the main would prevent the fire department from
delivering supplemental water into the system — hence they are not allowed.
5
Which of the following may be permitted in the system downstream of the fire department connection?
A. Control valves in the FDC piping
B. Pressure-reducing regulators at the FDC
C. Control valves located downstream of the FDC (within the protected system) ✅
D. Locked valves that isolate the entire water supply from the FDC
Rationale: Valves that control portions of the protected system downstream of the FDC can be
permitted for system operation, provided they don’t prevent fire department pumping when required.
6
When more than one water supply exists, what must be installed in each connection?
A. Pressure regulator
B. Drain valve
C. Check valve ✅
D. Flow meter
Rationale: Check valves prevent backflow between multiple supplies and ensure each source cannot
feed backward into the other.
7
All check valves shall have what installed upstream and downstream of the check valve?
A. Flow meters
B. Control valves (shutoff valves) ✅
NFPA 24 TEST (TFM10) UPDATED EXAM WITH MOST TESTED
QUESTIONS AND ANSWERS | GRADED A+ | ASSURED SUCCESS
WITH DETAILED RATIONALES
1
This standard shall apply to piping intended to carry water for what?
A. Municipal drinking-water mains
B. Sanitary sewer mains
C. Private fire service mains ✅
D. Stormwater drains
Rationale: The rules you posted are specific to private fire service mains — piping intended to provide
water for fire protection, not general utility systems.
2
Working plans for installation or remodeling of fire-service equipment must be submitted for approval
to the:
A. Local contractor association
B. Building owner
C. Authority Having Jurisdiction (AHJ) ✅
D. Nearest fire station
Rationale: The AHJ (authority having jurisdiction) is the entity responsible for reviewing and approving
plans before installation or remodeling.
3
Which statement about pressure-regulating devices in fire service piping is correct?
A. They must be installed at every hydrant.
B. They are required on private fire service mains.
C. Pressure-regulating devices shall not be used ✅
D. They are optional per the installer’s preference.
Rationale: Pressure regulation can reduce available fire-fighting pressure; the standard prohibits using
pressure-regulating devices in these mains unless specifically allowed.
, ESTUDYR
4
Which device shall not be installed in the piping from the fire-department connection (FDC) to the fire
service main?
A. Pressure gauge
B. Control valves (shutoff valves) ✅
C. Access fitting
D. Permanent indicator plate
Rationale: Control valves between the FDC and the main would prevent the fire department from
delivering supplemental water into the system — hence they are not allowed.
5
Which of the following may be permitted in the system downstream of the fire department connection?
A. Control valves in the FDC piping
B. Pressure-reducing regulators at the FDC
C. Control valves located downstream of the FDC (within the protected system) ✅
D. Locked valves that isolate the entire water supply from the FDC
Rationale: Valves that control portions of the protected system downstream of the FDC can be
permitted for system operation, provided they don’t prevent fire department pumping when required.
6
When more than one water supply exists, what must be installed in each connection?
A. Pressure regulator
B. Drain valve
C. Check valve ✅
D. Flow meter
Rationale: Check valves prevent backflow between multiple supplies and ensure each source cannot
feed backward into the other.
7
All check valves shall have what installed upstream and downstream of the check valve?
A. Flow meters
B. Control valves (shutoff valves) ✅
