/community-hubs/deltav-community-connect/b/safety-weblog/posts/optimizing-safety-instrumented-system-proof-testingIf you are new to the world of process safety, you quickly learn that it has its own jargon with phrases such as safety instrumented functions, proof test intervals, PDFavg, etc. A Flow Control magazine article, Ensuring safety compliance with optimizeden-USTelligent Community 13