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Fire Detection & Suppression Systems Flashcards

7 cards from real FST practice questions. Tap to flip, then mark Knew It or Still Learning โ€” missed cards come back until you master them.

Read the first 7 Fire Detection & Suppression Systems flashcards as text
  1. In a fire alarm system, what does a 'supervisory signal' indicate?

    Answer: An off-normal condition in a fire protection system requiring attention

    A supervisory signal indicates an off-normal condition in a fire protection system (such as a closed sprinkler valve) that requires investigation but is not necessarily a fire.

  2. What is the minimum ceiling height at which a standard upright or pendent sprinkler may require a longer deflector-to-ceiling distance adjustment?

    Answer: Only when ceiling exceeds 20 feet

    NFPA 13 requires additional sprinkler design consideration and adjustments for ceiling heights exceeding 20 feet due to fire plume dynamics at greater heights.

  3. A fire technician finds a sprinkler valve locked in the closed position. According to NFPA 25, this should be immediately reported as:

    Answer: An impairment requiring proper impairment procedures

    Any condition that leaves fire protection equipment out of service must be handled through formal impairment procedures, including notifying the AHJ and taking compensating measures.

  4. Which of the following is a PRIMARY advantage of an addressable fire alarm system over a conventional zoned system?

    Answer: Each device has a unique address enabling pinpoint identification

    Addressable systems assign a unique identifier to each device, allowing the FACP to identify the exact detector or device that activated rather than only the zone.

  5. The required sound pressure level for audible notification appliances in sleeping areas per NFPA 72 is:

    Answer: 75 dBA at the pillow level

    NFPA 72 requires a minimum of 75 dBA measured at the pillow in sleeping areas to ensure occupants can be awakened by the alarm.

  6. Foam suppression systems are most appropriate for protecting:

    Answer: Aircraft hangars and flammable liquid storage areas

    Foam systems are specifically effective for flammable liquid fires (Class B) because foam creates a blanket that excludes oxygen and prevents vapor release, making them ideal for hangars and fuel storage.

  7. What is the purpose of a tamper switch on a sprinkler system control valve?

    Answer: To signal the FACP if the valve is moved from the fully open position

    A tamper switch (supervisory switch) monitors the valve position and sends a supervisory signal to the FACP if the valve is partially or fully closed, alerting personnel to an impairment.