Which of the following is NOT a type of sprinkler system defined by NFPA 13?

Master the NFPA 13 Exam with comprehensive flashcards and multiple choice questions. Each question is accompanied by hints and explanations to ensure a deep understanding. Prepare effectively for your certification!

In the context of NFPA 13, sprinkler systems are categorized into several defined types based on their operation and the environments in which they are used. The types of systems typically recognized include wet pipe systems, dry pipe systems, and pre-action systems.

A wet pipe system is one of the most common types, where water is held within the pipes and immediately delivered upon activation. Dry pipe systems, on the other hand, contain pressurized air or nitrogen, which holds back the water supply until a sprinkler is activated, making them suitable for environments prone to freezing. Pre-action systems are a hybrid that combines elements of both wet and dry systems but requires an activation event before water is introduced into the piping, often used in areas that require extra protection against accidental discharge.

"Fire water" is not a recognized category within NFPA 13. While it may refer to water supply specifically meant for firefighting efforts, it does not represent a distinct type of sprinkler system as outlined in the standard. Therefore, identifying "fire water" as not defined by NFPA 13 is accurate, as it does not align with the classifications established for sprinkler systems within that standard.

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