Fire Detection & Suppression Systems Flashcards
7 cards from real FST practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Fire Detection & Suppression Systems flashcards as text
A rate-of-rise heat detector will activate when:
Answer: Temperature rises more than 12-15°F per minute
Rate-of-rise detectors activate when temperature increases at a rate exceeding approximately 12-15°F per minute, regardless of the actual temperature reached.
In a zoned fire alarm system, what is the primary benefit of dividing a building into multiple zones?
Answer: It allows first responders to quickly locate the area of alarm
Zoning allows the FACP to indicate which specific area of the building has activated, helping responders quickly locate and respond to the emergency.
What is the primary hazard of using a CO2 extinguisher in a small, enclosed space?
Answer: It may displace enough oxygen to cause asphyxiation
CO2 suppresses fire by displacing oxygen, and in a confined space this oxygen displacement can reach dangerous levels that cause asphyxiation for occupants.
Which type of sprinkler head responds fastest in a fire and is designed to protect high-value equipment?
Answer: Quick response (QR) sprinkler
Quick response (QR) sprinklers have a smaller thermal element and activate faster, reducing heat, smoke, and fire spread in the critical early stages.
NFPA 25 applies to which fire protection activity?
Answer: Inspection, testing, and maintenance of water-based fire protection systems
NFPA 25 is the Standard for the Inspection, Testing, and Maintenance of Water-Based Fire Protection Systems, covering ongoing ITM requirements after installation.
A Class K fire extinguisher is specifically designed for use on fires involving:
Answer: Cooking oils and fats in commercial kitchens
Class K extinguishers use wet chemical agents specifically formulated to suppress fires in cooking appliances involving vegetable and animal oils and fats.
When testing a waterflow alarm on a wet pipe sprinkler system, which device is used to simulate sprinkler flow without actually discharging water through a head?
Answer: Inspector's test connection (ITC)
The inspector's test connection (ITC) is a small orifice valve that simulates the flow of one sprinkler head to test waterflow alarms and devices without opening a sprinkler.