Questions and Answers
What is the purpose of an outside stem and yoke valve?
What is a major concern with battery-powered smoke alarms?
Which sprinkler system valve uses a threaded shaft to indicate the position of the valve?
Which type of alarm notification system sends a signal to a third-party, off-site monitoring facility?
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What is a concern when a gaseous suppression system is activated?
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Which type of alarm notification system alerts only building occupants?
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What is the name of the standardized audio pattern that must be produced by a modern audible fire alarm?
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Which kind of sprinkler system uses accelerators?
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Which type of automatic sprinkler system flows water from all the sprinkler heads within a protected area?
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What do older heat detectors lack that makes it difficult to track down the cause of an alarm?
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How prone are heat detectors to false alarms as compared to smoke detectors?
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Where is a main sprinkler system valve usually installed?
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Sprinkler heads are classified by their:
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Which type of heat detector must be replaced after activation?
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In a preaction system, one function of the main valve is to act as a:
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What is the primary advantage of a preaction sprinkler system?
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The percentage of blocked light in a beam detector represents the __________ rate.
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What does activation of a water-motor gong indicate?
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Which is one of the two types of fire detection technologies used in smoke detectors?
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Which type of smoke detector is activated by visible products of combustion?
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Study Notes
Sprinkler System Valves
- Outside stem and yoke valves control the water supply to the sprinkler system.
- Main sprinkler system valves are typically located on the riser above the water supply control valve.
Smoke Alarms
- Battery-powered smoke alarms have a significant concern related to battery replacement.
- Heat detectors are less prone to false alarms compared to smoke detectors.
Types of Alarm Notification Systems
- Central station systems send signals to a third-party monitoring facility.
- Protected premises systems alert only the occupants within the building.
Fire Detection Technologies
- Two common types of fire detection technologies used in smoke detectors are ionization and photoelectric.
- Photoelectric smoke detectors activate in response to visible products of combustion.
Automatic Sprinkler Systems
- Deluge systems release water from all sprinkler heads within the protected area.
- Dry-pipe systems utilize accelerators to initiate water flow.
- Preaction sprinkler systems prevent accidental water discharges and have the main valve acting as a dam.
Audio Patterns and Indicators
- The standardized audio pattern for modern fire alarms is Temporal-3.
- Older heat detectors lack indicator lights, making it challenging to track alarm causes.
Fire Alarm Functionalities
- Activation of a water-motor gong indicates water flow within the system.
- Fixed temperature heat detectors must be replaced after activation.
Detection Principles
- The percentage of blocked light in a beam detector indicates the obscuration rate.
Sprinkler Head Classification
- Sprinkler heads are categorized based on their release temperature, affecting operational efficacy in fire control.
Overall System Considerations
- Addressing concerns such as occupant removal and false alarms is critical in fire safety systems, ensuring effective response during emergencies.
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Description
Test your knowledge on fire safety concepts with these flashcards covering Chapter 26. This quiz focuses on key aspects such as valve functions and smoke alarm concerns. Perfect for anyone studying fire safety regulations and best practices.
