40 Questions
Which type of sprinkler system is the most common and easiest to design and maintain?
Wet pipe sprinkler system
In which type of sprinkler system is water under pressure at all times, and discharges immediately when a sprinkler is activated?
Wet pipe sprinkler system
In which type of sprinkler system should the temperature of the protected area be maintained at or above 4°C to prevent freezing?
Wet pipe sprinkler system
Which type of fire protection system is common for facilities that contain combustible or flammable liquids?
Deluge system
What happens when a fire is detected in a deluge sprinkler system?
The deluge valves are automatically opened
What is the purpose of antifreeze systems in fire protection?
To lower the freezing point of water
Which type of sprinkler system is typically found in environments that house computer equipment or communication equipment, museums, and other facilities where inadvertent water discharge must be avoided?
Preaction system
What is the purpose of a dry-pipe valve in a sprinkler system?
To block the water supply
What type of system is a combination of both the preaction and dry-pipe systems?
Combination system
Which type of sprinkler system is intended to deliver large quantities of water over a large area in a relatively short period of time?
Deluge system
Which type of fire protection system is commonly used for facilities that store hydrocarbon products, such as propane?
Deluge system
What is the purpose of the large volumes of water in a deluge sprinkler system?
To prevent thermal damage
What type of system can be used to protect small areas, such as outside loading docks or exterior canopies?
Antifreeze system
Which type of sprinkler system should be used when the temperature of the protected area is maintained at or above 4°C to prevent freezing?
Wet pipe system
What is the purpose of a check valve in a sprinkler system?
To prevent water from flowing back into the water supply
Which type of sprinkler system is commonly found in environments that house computer equipment or communication equipment, museums, and other facilities where inadvertent water discharge must be avoided?
Preaction system
Which type of sprinkler system is typically used in environments where the temperature could become less than 4°C?
Dry pipe system
What is the purpose of a dry-pipe valve in a sprinkler system?
To block the water supply
Which type of fire protection system is typically found in environments that house computer equipment or communication equipment, museums, and other facilities where inadvertent water discharge must be avoided?
Preaction system
What happens when a fire is detected in a deluge sprinkler system?
The deluge valve opens and water is admitted into the pipe network
Which type of sprinkler system is commonly found in office buildings, stores, manufacturing facilities, hotels, and health care facilities?
Wet pipe sprinkler system
What is the purpose of a check valve in a sprinkler system?
To prevent water from flowing back into the water supply
Which type of sprinkler system should only be used when the temperature of the protected area is maintained at or above 4°C to prevent freezing?
Wet pipe sprinkler system
Which type of fire protection system is commonly used for facilities that store hydrocarbon products, such as propane?
Deluge system
Which type of sprinkler system should be used when the temperature of the protected area is maintained at or above 4°C to prevent freezing?
Wet-pipe system
What is the purpose of antifreeze systems in fire protection?
To lower the freezing point of water in wet-pipe systems
Which type of fire protection system is commonly used for facilities that store hydrocarbon products, such as propane?
Deluge system
What happens when a fire is detected in a deluge sprinkler system?
Water discharges immediately from all sprinklers
Which type of sprinkler system is commonly found in environments that house computer equipment or communication equipment, museums, and other facilities where inadvertent water discharge must be avoided?
Preaction system
Which type of sprinkler system is intended to deliver large quantities of water over a large area in a relatively short period of time?
Deluge system
Which type of sprinkler system is commonly found in environments that house computer equipment or communication equipment, museums, and other facilities where inadvertent water discharge must be avoided?
Dry pipe sprinkler system
What is the purpose of antifreeze systems in fire protection?
To prevent freezing of the water in the sprinkler system
Which type of fire protection system is commonly used for facilities that store hydrocarbon products, such as propane?
Deluge sprinkler system
Which type of fire protection system is commonly used for facilities that store hydrocarbon products, such as propane?
Deluge system
What is the purpose of the large volumes of water in a deluge sprinkler system?
To prevent thermal damage
What is the purpose of antifreeze systems in fire protection?
To lower the freezing point
Which type of sprinkler system is commonly used in deep-freeze facilities where accidental preaction valve opening would cause frozen water pipes in a very short time?
Combination system
What is the purpose of a preaction valve in a sprinkler system?
To block the water supply
Which type of fire protection system is intended to contain rapidly growing and spreading fires by delivering large quantities of water over a large area in a relatively short period of time?
Deluge system
What is the purpose of the supplemental detection system in a preaction system?
To automatically open when a fire is detected
Study Notes
Sprinkler Systems
- Wet pipe systems are the most common and easiest to design and maintain.
- Wet pipe systems have water under pressure at all times, and discharge immediately when a sprinkler is activated.
- Dry pipe systems should be used when the temperature of the protected area is below 4°C to prevent freezing.
- Deluge systems are used for facilities that contain combustible or flammable liquids, and discharge large quantities of water over a large area in a short period of time.
- When a fire is detected in a deluge system, the valve opens, and water flows into the piping, discharging from all sprinklers in the system.
Preaction Systems
- Preaction systems are used in environments that house computer equipment or communication equipment, museums, and other facilities where inadvertent water discharge must be avoided.
- Preaction systems combine the benefits of dry pipe and deluge systems.
- The purpose of a preaction valve is to delay water flow into the piping until a fire is detected.
- The supplemental detection system in a preaction system provides additional detection capabilities to ensure that the system operates only when a fire is present.
Antifreeze Systems
- Antifreeze systems are used in areas where the temperature is below 4°C to prevent freezing.
- The purpose of antifreeze systems is to prevent freezing in the piping.
Dry Pipe Systems
- Dry pipe systems are used in areas where the temperature is below 4°C to prevent freezing.
- The purpose of a dry-pipe valve is to prevent water from entering the piping until a fire is detected.
Check Valves
- The purpose of a check valve in a sprinkler system is to prevent water from flowing backwards in the piping.
Applications
- Wet pipe systems are commonly used in office buildings, stores, manufacturing facilities, hotels, and health care facilities.
- Deluge systems are commonly used for facilities that store hydrocarbon products, such as propane.
- Preaction systems are used in environments that house computer equipment or communication equipment, museums, and other facilities where inadvertent water discharge must be avoided.
- Dry pipe systems are used in deep-freeze facilities where accidental preaction valve opening would cause frozen water pipes in a very short time.
Test your knowledge on fire protection systems and their different designs. Learn about wet pipe, dry pipe, preaction, and deluge designs for sprinkler systems. Get familiar with the NFPA 13 Standard for the Installation of Sprinkler Systems.
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