According to the Minnesota State Fire Code, how often should dry systems be checked for air leakage?

The Minnesota State Fire Code specifies that dry sprinkler systems should be checked for air leakage on an annual basis. This requirement is in place to ensure the systems remain effective and reliable in the event of a fire. Air leakage can reduce the pressure in the system, potentially compromising its ability to operate properly. A yearly inspection allows for timely detection and correction of any leaks, ensuring that the dry system can maintain the necessary pressure and function correctly when needed. Keeping to this annual schedule helps ensure safety and compliance with fire regulations.