The old argument that we cannot do Hydrostatic Testing on our piping and must do Pneumatic Testing is as old as I have been dealing with process piping (32 years and counting). I was raised in the process and semiconductor industries, where we ALWAYS did hydrostatic testing, and pneumatic testing was our last resort. But some overlook the ease and safety of hydrostatic testing vs pneumatic (which I have written about over 40 times). For example, during Hydrostatic testing, there is no requirement to…