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Water-Based Suppression Systems Flashcards

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

Read the first 7 Water-Based Suppression Systems flashcards as text

  1. Per NFPA 25, what does the inspector's test valve (ITV) allow a technician to verify during periodic testing?

    Answer: That waterflow alarm devices activate when flow equivalent to one sprinkler operates

    The inspector's test valve simulates flow equivalent to one sprinkler head to verify that all waterflow alarm devices (flow switches, water motor gongs) activate properly.

  2. During a 5-year internal pipe inspection per NFPA 25, what conditions are inspectors primarily looking for?

    Answer: Microbiologically influenced corrosion (MIC), tuberculation, and foreign material obstructions

    NFPA 25 five-year internal inspections target obstruction material — MIC deposits, scale, rust tubercles, and debris — that could impede water flow during a fire.

  3. Per NFPA 13 obstruction rules, when do ceiling beams require additional sprinklers to be installed below them?

    Answer: When beams create obstructions that exceed NFPA 13's allowable dimensional limits, preventing adequate water distribution below the beam

    NFPA 13 contains specific obstruction criteria; beams that exceed allowable size-to-spacing ratios require additional sprinklers below them to ensure water reaches the space beneath the obstruction.

  4. Per NFPA 750, how does a high-pressure water mist system differ from a low-pressure water mist system?

    Answer: High-pressure systems operate above 175 psi, producing finer mist droplets with greater surface area for heat absorption and oxygen displacement

    NFPA 750 classifies water mist by pressure range; high-pressure systems (above 175 psi) produce very fine droplets that flash to steam quickly, absorbing heat and displacing oxygen more effectively.

  5. What seismic protection measures does NFPA 13 require for sprinkler systems installed in high seismic design zones?

    Answer: Flexible couplings at building separations and sway bracing at specified intervals to accommodate seismic movement

    NFPA 13 requires sway bracing at specified intervals and flexible couplings where piping crosses seismic separations to prevent joint failure and pipe collapse during ground motion.

  6. Per NFPA 13, when are in-rack sprinklers required in addition to ceiling sprinklers in rack storage occupancies?

    Answer: When the commodity type or storage height exceeds the protection limitations of ceiling-only sprinklers per NFPA 13 storage protection criteria

    In-rack sprinklers are required when ceiling sprinklers alone cannot deliver adequate density to control the fire challenge posed by high-challenge commodities or excessive storage heights.

  7. A Class I standpipe system per NFPA 14 is intended for use by:

    Answer: Fire department personnel using 2½-inch hose connections for trained firefighter attack

    Class I standpipes provide 2½-inch hose connections for use exclusively by fire department and trained personnel during fire suppression operations.