Red Seal Sprinkler Fitter Practice Exam

Which of the following is NOT a classification of sprinkler systems?

1. Wet pipe

2. Dry pipe

3. Deluge systems

4. Pressure pipe

The correct answer is: Pressure pipe

The classification of sprinkler systems typically includes systems designed to address various fire hazards and environments. Wet pipe, dry pipe, and deluge systems are recognized categories, each with distinct operating mechanisms and applications. Wet pipe systems are the most common type, containing water in the pipes at all times, and they activate immediately when a fire is detected. Dry pipe systems, on the other hand, are filled with pressurized air or nitrogen, and they release water only when a sprinkler head is activated, which is particularly useful in areas susceptible to freezing. Deluge systems, which are typically found in high-hazard environments, have open sprinkler heads and release a large volume of water all at once when activated, providing fast and effective fire suppression. Pressure pipe does not represent an established classification of sprinkler systems. While the term might refer to pipes that can withstand certain pressure levels, it doesn’t align with the systematic categorization of sprinkler systems based on their fire control mechanisms. Thus, identifying pressure pipe as not being a formal classification of sprinkler systems is accurate.