Sprinkler Systems Assessment
Questions and Complete Solutions
Graded A+
True or False: pursuant to the latest NFPA 13, deluge systems can be scheduled systems - Answer: False
True or False: the orifice of the air supply to the dry pipe valve is always smaller then the orifice of the
smallest sprinkler in the system - Answer: False
True or False: a dry pipe system may be charged with compressed nitrogen - Answer: True
True or False: the allowable leakage for overhead piping is the same as the leakage that applies to
underground piping - Answer: False
True or False: According to NFPA 13, the air gauge and water gauge are interchangeable - Answer: False
True or False: When a pressure switch is installed on a wet system alarm line, it should be sensitive to
decreasing pressure - Answer: False
True or False: The use of reconditioned valves and devices as replacement equipment in existing
systems shall be permitted - Answer: True
True or False: In a looped sprinkler system, the branch lines are all tied together - Answer: False
True or False: Paddle-Type water flow alarm indicators shall be used in wet systems only - Answer: True
True or False: not more then 600 automatic sprinkler heads shall be controlled by any single preaction
valve - Answer: False
, When water pressure varies a great deal, a retard chamber is not sufficient to prevent false alarms.
What other device can be used?
A. A pressure switch. C. A jockey pump
B. An excess pressure pump. D. All of the above - Answer: B. An excess pressure pump
What is used on a butterfly valve from being opened or closed too quickly?
A. A Stuffing box C. A gear operator
B. A resilient wedge D. A chain lock - Answer: C. A gear operator
A dry pilot line must be constructed of?
A. Schedule 40 pipe
B. cast iron pipe
C. Galvanized steel or copper tubing
D. Cast iron or copper tubing - Answer: C. Galvanized steel or copper tubing
The proper device to be used on a dry pipe alarm line to give an electrical alarm when the valve trips
would be a ____
A. Flow switch. C. Monitor switch
B. Pressure switch. D. A or B - Answer: B. Monitor switch
An electrical monitor is being placed on the alarm line of an alarm valve. There is a retard chamber in
the trim. That electrical monitor would be a ___
A. Flow switch
B. Monitor switch
C. Pressure switch
Questions and Complete Solutions
Graded A+
True or False: pursuant to the latest NFPA 13, deluge systems can be scheduled systems - Answer: False
True or False: the orifice of the air supply to the dry pipe valve is always smaller then the orifice of the
smallest sprinkler in the system - Answer: False
True or False: a dry pipe system may be charged with compressed nitrogen - Answer: True
True or False: the allowable leakage for overhead piping is the same as the leakage that applies to
underground piping - Answer: False
True or False: According to NFPA 13, the air gauge and water gauge are interchangeable - Answer: False
True or False: When a pressure switch is installed on a wet system alarm line, it should be sensitive to
decreasing pressure - Answer: False
True or False: The use of reconditioned valves and devices as replacement equipment in existing
systems shall be permitted - Answer: True
True or False: In a looped sprinkler system, the branch lines are all tied together - Answer: False
True or False: Paddle-Type water flow alarm indicators shall be used in wet systems only - Answer: True
True or False: not more then 600 automatic sprinkler heads shall be controlled by any single preaction
valve - Answer: False
, When water pressure varies a great deal, a retard chamber is not sufficient to prevent false alarms.
What other device can be used?
A. A pressure switch. C. A jockey pump
B. An excess pressure pump. D. All of the above - Answer: B. An excess pressure pump
What is used on a butterfly valve from being opened or closed too quickly?
A. A Stuffing box C. A gear operator
B. A resilient wedge D. A chain lock - Answer: C. A gear operator
A dry pilot line must be constructed of?
A. Schedule 40 pipe
B. cast iron pipe
C. Galvanized steel or copper tubing
D. Cast iron or copper tubing - Answer: C. Galvanized steel or copper tubing
The proper device to be used on a dry pipe alarm line to give an electrical alarm when the valve trips
would be a ____
A. Flow switch. C. Monitor switch
B. Pressure switch. D. A or B - Answer: B. Monitor switch
An electrical monitor is being placed on the alarm line of an alarm valve. There is a retard chamber in
the trim. That electrical monitor would be a ___
A. Flow switch
B. Monitor switch
C. Pressure switch
