What is the best filling point for an exchanger tube side hydro-test?

The best filling point for an exchanger tube side hydro-test is the channel head. This selection is ideal because the channel head provides the largest and most accessible opening for filling the tube side of the heat exchanger with water. It facilitates an efficient filling process, allowing for the complete and thorough purging of air, which is crucial for ensuring that the entire system is adequately tested for leaks.

Filling through the channel head also allows for easy monitoring of the water level and pressure during the hydro-test, ensuring that the tubes are submerged and properly pressurized. This is important for detecting any potential leaks in the tubes, as air pockets can prevent thorough testing.

Other options, such as the flange joint or drain plug, do not offer the same level of accessibility or effectiveness for filling the system. The flange joint can complicate the filling process and may not fully eliminate air from the system. The drain plug, on the other hand, is typically positioned at the lowest point of the system and is designed for fluid removal rather than filling. Similarly, the temperature probe is not intended for fluid access and would not effectively allow for the necessary hydro-testing procedure. By selecting the channel head, the testing process is optimized for both safety and efficacy.