We have discussed the critical role of “torque” in constructing our chemical processes. I catch a lot of flack for my insistence on this critical function, for which I am genuinely surprised. But our piping design and construction RAGAGEP (ASME B31.3) is pretty clear on the matter, and now OSHA and EPA have “caught on” and are issuing citations where there is an LOPC event from a flanged connection. Here are the B31.3 requirements OSHA/EPA are referencing in their citations:
(emphasis by me)