During what phase of the installation should the connections be verified for security?

Verifying the connections for security during the post-startup phase is crucial for a few reasons. After installation and initial operation of a water treatment system, the equipment should undergo a thorough inspection to ensure that all connections are secure and functioning properly. This phase allows for the detection of any leaks or loose fittings that may not have been apparent during earlier installation phases. By addressing these potential issues after the system has been started up, technicians can confirm that the system is in optimal condition and reduce the risk of problems that could arise from insecure connections, such as leaks or system failure.

In the other phases mentioned, verification may not be as effective. For instance, checking connections during the tape measure phase primarily focuses on layout and fit, rather than security. Before startup, while critical adjustments and checks occur, they may not account for temperature changes or system pressure that could affect fitting integrity after the system is operational. During flow rate measurement, the primary focus is on the performance of the system, which diverts attention from the integrity of connections. Therefore, the post-startup phase serves as the final, critical opportunity to ensure that everything is secure after the system has been powered and had the chance to operate.