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Questions and Answers
What is the primary purpose of dwelling fire warning equipment?
What is the primary purpose of dwelling fire warning equipment?
life safety
Single-station smoke alarms for dwelling use became available in the?
Single-station smoke alarms for dwelling use became available in the?
1970s
Which area is covered under the requirements of NFPA 72, Chapter 29?
Which area is covered under the requirements of NFPA 72, Chapter 29?
An apartment
Where must heat alarms or detectors be installed in ceilings that consist of beams or joists?
Where must heat alarms or detectors be installed in ceilings that consist of beams or joists?
Areas of a dwelling over ______ require additional smoke alarms or detectors.
Areas of a dwelling over ______ require additional smoke alarms or detectors.
Which device, when actuated and interconnected to another similar device, will cause the other device to actuate?
Which device, when actuated and interconnected to another similar device, will cause the other device to actuate?
Actuation of multiple-station smoke alarms cannot cause actuation of which of the following?
Actuation of multiple-station smoke alarms cannot cause actuation of which of the following?
Single-station and multiple-station smoke alarms can be used in an office building to provide occupant warning.
Single-station and multiple-station smoke alarms can be used in an office building to provide occupant warning.
Dwelling smoke alarms can be installed in ambient temperatures between _____ and _____.
Dwelling smoke alarms can be installed in ambient temperatures between _____ and _____.
What is the most appropriate type of detection in dwelling garages, unfinished attics, or crawl spaces?
What is the most appropriate type of detection in dwelling garages, unfinished attics, or crawl spaces?
Wall-mounted heat detectors must be mounted so the top of the detector is between _____ and 12 inches from the ceiling.
Wall-mounted heat detectors must be mounted so the top of the detector is between _____ and 12 inches from the ceiling.
What is the maximum number of unmonitored smoke alarms that can be interconnected?
What is the maximum number of unmonitored smoke alarms that can be interconnected?
Smoke alarms or detectors on peaked ceilings must be within _____ of the peak.
Smoke alarms or detectors on peaked ceilings must be within _____ of the peak.
Heat detectors and alarms mounted on a ceiling must be mounted at least _____ from a wall.
Heat detectors and alarms mounted on a ceiling must be mounted at least _____ from a wall.
For the purposes of life safety, Chapter 29 of NFPA 72 requires the primary means of fire detection in dwellings to be which type of detection?
For the purposes of life safety, Chapter 29 of NFPA 72 requires the primary means of fire detection in dwellings to be which type of detection?
The fire alarm signal in a dwelling sleeping room must be not less than _____ at the pillow.
The fire alarm signal in a dwelling sleeping room must be not less than _____ at the pillow.
A 110-candela visible notification appliance used to awaken a sleeping person must be mounted more than _____ from the ceiling.
A 110-candela visible notification appliance used to awaken a sleeping person must be mounted more than _____ from the ceiling.
A new two-story single-family dwelling with a basement and three bedrooms on the second floor requires a minimum of _____ smoke alarms.
A new two-story single-family dwelling with a basement and three bedrooms on the second floor requires a minimum of _____ smoke alarms.
Heat detectors used in dwellings must have a listed spacing of not less than _____.
Heat detectors used in dwellings must have a listed spacing of not less than _____.
Dwelling heat detectors must be selected to operate at a temperature not less than _____ above the maximum expected ambient temperature in the protected space.
Dwelling heat detectors must be selected to operate at a temperature not less than _____ above the maximum expected ambient temperature in the protected space.
The Code requires smoke alarms or detectors within _____ to _____ of a range or cooktop to be either of the photoelectric type or to have a silence feature.
The Code requires smoke alarms or detectors within _____ to _____ of a range or cooktop to be either of the photoelectric type or to have a silence feature.
Smoke detectors or alarms must be located at least _____ from a supply diffuser or tips of a paddle fan.
Smoke detectors or alarms must be located at least _____ from a supply diffuser or tips of a paddle fan.
Where must smoke alarms or detectors in a basement be mounted?
Where must smoke alarms or detectors in a basement be mounted?
Where AC is the primary supply for dwelling fire alarm or carbon monoxide systems, the supply must be fed from a(n)?
Where AC is the primary supply for dwelling fire alarm or carbon monoxide systems, the supply must be fed from a(n)?
A primary power source for smoke detector equipment may consist of?
A primary power source for smoke detector equipment may consist of?
Match the type of detector to its appropriate application:
Match the type of detector to its appropriate application:
Carbon monoxide (CO) alarms or detectors must be?
Carbon monoxide (CO) alarms or detectors must be?
Type A public emergency alarm reporting systems receive more than _____ alarms per year.
Type A public emergency alarm reporting systems receive more than _____ alarms per year.
Which of the following is not considered as a supervising station permitted by NFPA 72?
Which of the following is not considered as a supervising station permitted by NFPA 72?
Where a '1' indicates a single tap of a code wheel, a '111-11111-11-1' signal from a street box generates what box number at the public fire dispatch center?
Where a '1' indicates a single tap of a code wheel, a '111-11111-11-1' signal from a street box generates what box number at the public fire dispatch center?
Street boxes transmit their unique coded number a minimum of _____ time(s).
Street boxes transmit their unique coded number a minimum of _____ time(s).
What operation must be accomplished before testing a protected premises system that is connected to a master box?
What operation must be accomplished before testing a protected premises system that is connected to a master box?
A public emergency alarm reporting system operates on a _____ loop.
A public emergency alarm reporting system operates on a _____ loop.
Central station service is provided only by a contract between _____ and subscriber.
Central station service is provided only by a contract between _____ and subscriber.
Which of the following cannot be a prime contractor for central station service?
Which of the following cannot be a prime contractor for central station service?
How many elements are required to be provided under a central station service contract?
How many elements are required to be provided under a central station service contract?
For central station service, the prime contractor indicates compliance by placing a certificate or placard within _____ of the system controls.
For central station service, the prime contractor indicates compliance by placing a certificate or placard within _____ of the system controls.
Underwriters Laboratories (UL) inspects every UL listed central station system.
Underwriters Laboratories (UL) inspects every UL listed central station system.
A central station operator may call 911 to retransmit fire alarm signals.
A central station operator may call 911 to retransmit fire alarm signals.
Central station operators must re-transmit an alarm signal to the public fire dispatcher within _____ seconds.
Central station operators must re-transmit an alarm signal to the public fire dispatcher within _____ seconds.
In a location where it is necessary to reset the system, a central station operator must dispatch a runner to arrive within _____ of receiving an alarm signal from protected premises.
In a location where it is necessary to reset the system, a central station operator must dispatch a runner to arrive within _____ of receiving an alarm signal from protected premises.
The proper sequence of events for processing an alarm signal at a central station is to?
The proper sequence of events for processing an alarm signal at a central station is to?
Can a central station operator call 9-1-1 to retransmit fire alarm signals?
Can a central station operator call 9-1-1 to retransmit fire alarm signals?
Which of the following property types would be permitted to be monitored by a proprietary supervising station?
Which of the following property types would be permitted to be monitored by a proprietary supervising station?
Which of the following types of other activities would be permitted to be operated in conjunction with a central station?
Which of the following types of other activities would be permitted to be operated in conjunction with a central station?
A digital alarm communicator system (DACS) requires a minimum of _____ means of communication between the protected premises and the supervising station.
A digital alarm communicator system (DACS) requires a minimum of _____ means of communication between the protected premises and the supervising station.
Which of the following communications methods is considered a legacy system?
Which of the following communications methods is considered a legacy system?
Which of the following communications means is no longer permitted for new systems by NFPA 72?
Which of the following communications means is no longer permitted for new systems by NFPA 72?
Under some circumstances, a DACT may take as long as _____ to transmit a signal from protected premises to a central station.
Under some circumstances, a DACT may take as long as _____ to transmit a signal from protected premises to a central station.
The primary means of communication for a DACT must be a(n)?
The primary means of communication for a DACT must be a(n)?
The secondary power supply for a proprietary supervising station must have a minimum capacity of _____ hours.
The secondary power supply for a proprietary supervising station must have a minimum capacity of _____ hours.
Runners must communicate with the supervising station at intervals not exceeding _____ minutes.
Runners must communicate with the supervising station at intervals not exceeding _____ minutes.
Proprietary supervising stations must retain records for not less than _____ months.
Proprietary supervising stations must retain records for not less than _____ months.
A DACT using multiple pathways requires pathways to be monitored for integrity at _____ intervals.
A DACT using multiple pathways requires pathways to be monitored for integrity at _____ intervals.
An Internet Protocol (IP) transmitter using a single pathway requires the pathway to be monitored for integrity at _____ intervals.
An Internet Protocol (IP) transmitter using a single pathway requires the pathway to be monitored for integrity at _____ intervals.
What city had the first operational public emergency alarm reporting system?
What city had the first operational public emergency alarm reporting system?
The first public emergency alarm reporting system became operational in the year _____ .
The first public emergency alarm reporting system became operational in the year _____ .
What are the three sides of the fire triangle?
What are the three sides of the fire triangle?
Which of the following is not a product of combustion?
Which of the following is not a product of combustion?
Heat is produced when materials _____ react to form simpler compounds.
Heat is produced when materials _____ react to form simpler compounds.
Smoke particles are approximately _____ to _____.
Smoke particles are approximately _____ to _____.
Smoke detectors undergoing UL testing must actuate between _____ and _____ per foot obscuration.
Smoke detectors undergoing UL testing must actuate between _____ and _____ per foot obscuration.
A condition where a burning fuel produces smoke without flames is known as?
A condition where a burning fuel produces smoke without flames is known as?
During UL tests, system-powered smoke detectors must respond to a polystyrene fire within _____ minutes.
During UL tests, system-powered smoke detectors must respond to a polystyrene fire within _____ minutes.
What kind of detector is most appropriate for an elevator lobby in an apartment building?
What kind of detector is most appropriate for an elevator lobby in an apartment building?
What kind of detector is most appropriate for an unenclosed, unheated parking garage?
What kind of detector is most appropriate for an unenclosed, unheated parking garage?
Rooms or spaces with high ceilings may be subject to what condition during a fire?
Rooms or spaces with high ceilings may be subject to what condition during a fire?
The most appropriate type of detection for a computer room is _____ detection.
The most appropriate type of detection for a computer room is _____ detection.
The horizontal spacing for a detector in a room with five minutes per air change is _____ .
The horizontal spacing for a detector in a room with five minutes per air change is _____ .
A room has dimensions of 20 feet by 15 feet with a 10-foot high ceiling. There are six 200-cubic-feet-per-minute (CFM) registers supplying air to the room. How many air changes per hour take place in this room?
A room has dimensions of 20 feet by 15 feet with a 10-foot high ceiling. There are six 200-cubic-feet-per-minute (CFM) registers supplying air to the room. How many air changes per hour take place in this room?
Temperatures lower than _____ and higher than _____ are not suitable for smoke detectors.
Temperatures lower than _____ and higher than _____ are not suitable for smoke detectors.
Smoke detectors are appropriate for rooms containing a swimming pool.
Smoke detectors are appropriate for rooms containing a swimming pool.
Concealed duct smoke detectors mounted more than _____ above the floor must be provided with a remote indicator, where the duct smoke detector indicator is not visible from the floor.
Concealed duct smoke detectors mounted more than _____ above the floor must be provided with a remote indicator, where the duct smoke detector indicator is not visible from the floor.
Which of the following is not likely to create nuisance alarms for smoke detectors?
Which of the following is not likely to create nuisance alarms for smoke detectors?
Duct smoke detectors are required to initiate a _____ signal, unless the signal is transmitted to a location that is not constantly attended.
Duct smoke detectors are required to initiate a _____ signal, unless the signal is transmitted to a location that is not constantly attended.
Radiant energy-sensing fire detectors are most appropriate for which of the following applications?
Radiant energy-sensing fire detectors are most appropriate for which of the following applications?
Ionization-type smoke detectors are slightly better at detecting smoke particles that are _____ and _____.
Ionization-type smoke detectors are slightly better at detecting smoke particles that are _____ and _____.
What kind of detector is most appropriate for an atrium?
What kind of detector is most appropriate for an atrium?
Air-sampling smoke detectors usually send _____ signals to the system control unit.
Air-sampling smoke detectors usually send _____ signals to the system control unit.
According to NFPA 90A, HVAC systems of _____ or _____ require supply-side smoke detection.
According to NFPA 90A, HVAC systems of _____ or _____ require supply-side smoke detection.
Where system (area) smoke detectors are used for door releasing service, they must be?
Where system (area) smoke detectors are used for door releasing service, they must be?
Which of the following is an example of a smoke control function?
Which of the following is an example of a smoke control function?
According to NFPA 90A, duct smoke detectors are required when the minimum airflow exceeds _____.
According to NFPA 90A, duct smoke detectors are required when the minimum airflow exceeds _____.
Which of the following statements is true? Area smoke detectors may SOMETIMES be used as a substitute for duct smoke detectors.
Which of the following statements is true? Area smoke detectors may SOMETIMES be used as a substitute for duct smoke detectors.
Air-sampling smoke detector sampling pipes must be labeled every _____ .
Air-sampling smoke detector sampling pipes must be labeled every _____ .
Match the application to the most appropriate detection system:
Match the application to the most appropriate detection system:
Area smoke detectors _____ not be located _____ from air supply or return air diffusers of HVAC systems.
Area smoke detectors _____ not be located _____ from air supply or return air diffusers of HVAC systems.
Specifications are an opportunity for the designer to add?
Specifications are an opportunity for the designer to add?
Under the MasterSpec® numbering system, specifications for fire protection systems are now found in Division _____ .
Under the MasterSpec® numbering system, specifications for fire protection systems are now found in Division _____ .
Which of the following is most likely to be found in fire alarm specifications?
Which of the following is most likely to be found in fire alarm specifications?
Public authorities having jurisdiction, such as a fire marshal or electrical inspector, can enforce specifications.
Public authorities having jurisdiction, such as a fire marshal or electrical inspector, can enforce specifications.
The Construction Specifications Institute (CSI) revised the MasterSpec® specifications numbering system in _____ .
The Construction Specifications Institute (CSI) revised the MasterSpec® specifications numbering system in _____ .
Specifications Division _____ applies to all other divisions.
Specifications Division _____ applies to all other divisions.
Which of the following is usually found on shop drawings?
Which of the following is usually found on shop drawings?
An NAC circuit consists of _____ conductors.
An NAC circuit consists of _____ conductors.
In reviewing the sample fire alarm drawings, determine if the building is protected by an automatic sprinkler system.
In reviewing the sample fire alarm drawings, determine if the building is protected by an automatic sprinkler system.
What is device L1M20?
What is device L1M20?
Visual appliances must be installed at least _____ above finished floor.
Visual appliances must be installed at least _____ above finished floor.
How many signaling line circuits (SLCs) are used?
How many signaling line circuits (SLCs) are used?
A manual station can be mounted on a _____ electrical box.
A manual station can be mounted on a _____ electrical box.
Flashcards
What is the difference between single-station and multiple-station smoke alarms?
What is the difference between single-station and multiple-station smoke alarms?
Single-station smoke alarms are designed for individual homes and do not connect to a central system, while multiple-station alarms are interconnected, so when one activates, all connected alarms sound.
What is NFPA 72?
What is NFPA 72?
NFPA 72 is a comprehensive standard for fire alarm systems that covers requirements for various types of buildings, including dwellings, apartments, and commercial structures.
Which type of detector is better suited for garages and crawl spaces: smoke or heat?
Which type of detector is better suited for garages and crawl spaces: smoke or heat?
Smoke detectors are primarily used in dwellings and are most effective for detecting slow-burning fires, while heat detectors are suitable for garages and crawl spaces because they respond to rapid temperature changes.
What is the minimum required sound level for a fire alarm signal in sleeping rooms?
What is the minimum required sound level for a fire alarm signal in sleeping rooms?
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Where should visible fire alarm appliances be placed in relation to the ceiling?
Where should visible fire alarm appliances be placed in relation to the ceiling?
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How many smoke alarms are required in a two-story house with a basement?
How many smoke alarms are required in a two-story house with a basement?
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What is the minimum spacing and response temperature for heat detectors?
What is the minimum spacing and response temperature for heat detectors?
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Where should carbon monoxide alarms be placed in a home?
Where should carbon monoxide alarms be placed in a home?
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Where should smoke alarms be placed in relation to cooking appliances and supply diffusers?
Where should smoke alarms be placed in relation to cooking appliances and supply diffusers?
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Which city had the first operational public emergency alarm system?
Which city had the first operational public emergency alarm system?
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When are duct smoke detectors required?
When are duct smoke detectors required?
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What is NFPA 90A?
What is NFPA 90A?
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What are the requirements for central station monitoring services regarding transaction protocols and record retention?
What are the requirements for central station monitoring services regarding transaction protocols and record retention?
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What are the requirements for testing fire alarm devices and re-transmitting alarm signals?
What are the requirements for testing fire alarm devices and re-transmitting alarm signals?
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What are the monitoring intervals for DACT and IP transmitters in independent systems?
What are the monitoring intervals for DACT and IP transmitters in independent systems?
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Where should area smoke detectors be placed in relation to HVAC components?
Where should area smoke detectors be placed in relation to HVAC components?
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In what environments are heat detectors preferred over smoke detectors?
In what environments are heat detectors preferred over smoke detectors?
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Explain the difference between combustion and pyrolysis and how ionization detectors work.
Explain the difference between combustion and pyrolysis and how ionization detectors work.
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What can be customized in fire protection system specifications?
What can be customized in fire protection system specifications?
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What is the MasterSpec numbering system and where is fire protection information located?
What is the MasterSpec numbering system and where is fire protection information located?
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What information is typically included in shop drawings for a fire protection system?
What information is typically included in shop drawings for a fire protection system?
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What is the reporting frequency for runners in central station services?
What is the reporting frequency for runners in central station services?
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Where should smoke alarms or detectors be placed in basements?
Where should smoke alarms or detectors be placed in basements?
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What is the minimum height requirement for visual alarm appliances?
What is the minimum height requirement for visual alarm appliances?
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Study Notes
Fire Alarm Systems and Equipment
- Dwelling fire warning equipment primarily aims for life safety.
- Available single-station smoke alarms for dwellings began in the 1970s.
- NFPA 72, Chapter 29 covers requirements for areas like apartments.
- Heat alarms must be installed on the bottoms of beams or joists in ceilings.
- Smoke alarms are required for areas exceeding 1,000 square feet.
Smoke and Heat Detectors
- Multiple-station alarms activate interconnected devices.
- Actuation of smoke alarms does not trigger alarms in other dwellings or the building fire alarm system.
- Single-station and multiple-station smoke alarms are not suitable for office buildings, only household use.
- Smoke alarms can operate between 40°F and 100°F; heat detectors are preferred in garages and crawl spaces.
- Wall-mounted heat detectors should be 4 to 12 inches from the ceiling.
Installation and Specifications
- A maximum of 12 unmonitored smoke alarms can be interlinked.
- Smoke detectors must be within 3 feet of peaked ceilings and 4 inches from walls.
- NFPA 72 mandates smoke detection as the primary fire detection means in dwellings.
- Dwellings require a fire alarm signal of at least 75 dBA at the pillow in sleeping rooms.
Notification and Alarm Features
- Visible notification appliances must be over 24 inches from ceilings to awaken sleepers.
- A new two-story dwelling with a basement needs at least 6 smoke alarms.
- Heat detectors must have a spacing of at least 50 feet and function at temperatures 25°F above the ambient maximum.
Communication Systems
- Smoke alarms should be installed within 10-20 feet of cooking appliances or 3 feet from supply diffusers.
- Carbon monoxide alarms must be in rooms with fossil fuel appliances.
- Digital alarm communicator systems require a minimum of two communication means.
Historical and Regulatory Context
- Boston had the first public emergency alarm system operational since 1852.
- Duct smoke detectors are mandatory when airflow exceeds 2,000 cfm.
- NFPA 90A outlines the need for detection in HVAC systems of designated airflow capacities.
Testing and Maintenance
- Central station services should comply with transaction protocols and record retention policies.
- Devices must be tested and reliable, with central station operators expected to re-transmit alarm signals within 90 seconds.
- Pathway monitoring frequencies differ for independent systems, with intervals of 6 hours for DACT and 1 hour for IP transmitters.
Fire Detection Technologies
- Area smoke detectors must not be located less than 3 feet from HVAC components.
- Heat detection is favored in environments with specific characteristics, such as unheated areas or garages.
- Combustion produces smoke without flames through pyrolysis, while ionization detectors are more effective for smaller particles.
Specification and Regulation Compliance
- Fire protection system specifications can detail site-specific requirements and components.
- The MasterSpec numbering system currently organizes fire protection details under Division 28.
- Shop drawings typically display routing, device addresses, and schedule for wires and conduits.
Miscellaneous Details
- Runners for central station services must report every 15 minutes.
- Smoke alarms or detectors in basements should be installed near stairs.
- Visual alarm appliances must be installed a minimum of 80 inches above the finished floor.
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Description
Test your knowledge on fire safety equipment and regulations with this quiz. Covering essential definitions and historical context, you'll learn about dwelling fire warning systems and the requirements laid out in NFPA 72. Challenge yourself and ensure you're well-informed about life safety measures.
