What is the minimum water test time for a fire sprinkler system?

The minimum water test time for a fire sprinkler system is 15 minutes, which ensures that the system is thoroughly tested for any leaks and that all components are functioning properly. This period is crucial because it allows for the verification of the integrity of the piping system, ensuring that it can hold the requisite pressure and is free from any defects that could affect its performance during an actual fire event.

The 15-minute test duration is consistent with industry standards, as it provides sufficient time for any potential issues to manifest while ensuring the system is capable of performing reliably when needed. This length of time is typically established in the relevant codes and standards that govern fire protection systems, emphasizing safety and effectiveness in fire response readiness.

Shorter durations, such as 5 or 10 minutes, may not be sufficient to reveal leaks or weaknesses in the system, potentially compromising its reliability. A 20-minute test, while also thorough, may introduce unnecessary delays in the assessment process when the proven 15-minute mark adequately meets the requirements.