Wouldn’t that mean you’d never be able to have an opening in a flange? Quite common to have through holes for connectors and cabling on these flanges. I did question that statement on the other report too, but alas that engineer is no longer working here. Not sure about welded studs, I’d have to...
Very similar to this setup. Has a through hole in the middle of the flange and a few blind holes around the through hole. I’m looking into UG-36(a)(2) now as it could possibly apply here and this flange is hydrostatically tested and passed.
I’ve got a flat head flange that I did the calcs on following UG-34. It’s got a through hole in the middle which follows UG-36 requirements for size to not need support. This flange will have a junction box attached on the dry side of it to support cabling. As such, there are some tapped screw...
