When should a licensed plumber/fire suppression contractor perform an air/water test of the standpipe?

The correct timing for a licensed plumber or fire suppression contractor to perform an air/water test of the standpipe is during the alarm installation phase. Conducting the test at this stage ensures that any potential issues with the standpipe system can be identified and addressed immediately, facilitating compliance with safety regulations. Performing the air/water test before installation would not be feasible, as the standpipe system would not be operational at that point. Testing after inspection could lead to missed opportunities for immediate corrections, as any problems detected may require additional work to rectify. Testing only if a failure is noted is reactive rather than proactive, which could compromise safety and increase risks during further construction or operation. Thus, integrating the test during the alarm installation phase ensures a thorough and efficient assessment of the standpipe system's integrity and functionality.