NFPA National Fire Alarm and Signaling Code (NFPA 72) Practice Exam

A fire detector can indeed be installed during construction, but certain considerations must be taken into account regarding its effectiveness and reliability. Installing a fire detector during the early stages of construction can lead to potential damage or disruption from ongoing construction activities, which may impair the detector's function. Therefore, the most prudent approach is to ensure that any detectors installed during this phase are either replaced or tested and confirmed to be functional after construction is fully complete.

This practice aligns with safety standards because it helps maintain the integrity of the fire detection system, ensuring reliability once the structure is occupied. The requirement for replacement after construction is a precautionary measure to ensure that the detector can perform its intended role effectively without risk of interference from construction dust, debris, or other potential hazards that may compromise detection capabilities.

Thus, while it might be technically feasible to install detectors early, adherence to specific guidelines and the practice of ensuring their integrity through replacement or thorough testing aligns with NFPA standards, promoting a safer built environment in the long run.