Yes the rings were welded to the nozzles so I guess you could say the nozzle neck became part of the ring and it was continuous, I am not sure I would buy that. UG-29b says the ring must extend completely around the vessel except as in UG-29c which deals with internal rings. I talked with one of...
MrTank; You are right the drawings are from 1989 and hand drawn and questionable, but because the client wanted to re-use the ladders and platforms they had a third party engineering firm do a laser scan of the tower to verify clip locations. The resulting information we received confirmed the...
I just started the design work for a replacement tray tower for a local refinery. They want it built pretty much as is but to meet their current specs and reuse existing ladders & platforms. This vessel has 7 vacuum stiffening rings for external pressure. Two of the rings pass through nozzles...
