Please note, experts: it is an opening at the top of the tank, not an opening on the tube wall
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Two small, custom-made tanks will be prefabricated and installed on site. Please note that the openings are made in the top of the tanks, not in the tank walls; moreover, the reinforcing rings surrounding these openings cover the welds, with the openings not being located on the reinforcing rings themselves. I checked online and it says that a part of the reinforcement ring can be cut off directly – is that true? ?
Is that what you mean? Atmospheric pressure storage tank? Just cover it and weld it – no problem at all; it’s not even a big deal! For what you mentioned, cutting off a part – the width needs to be calculated; it applies to pressure vessels, and it’s different from yours
That’s exactly what it means – it’s a pressure vessel at normal pressure, which means that the reinforcement rings simply need to cover the welds; the welds that are covered don’t require RT testing? ? ? Are there any guidelines or other papers indicating that RT is not necessary? ? Great master, please reply
There are numerous design standards for atmospheric pressure tanks, and they vary slightly; it is necessary to follow the standard requirements indicated on the drawings.
The specification indicated on the drawing is GB50128
There used to be a saying that in such cases, cut off 1/3 of the width that is less than that of the reinforcement ring. Personally, I think: as long as it can be strengthened through calculation, that should be fine.
What size is this hole of yours? What are the design parameters of the storage tank? What medium is inside the tank? There are requirements for pressure vessels: the reinforcement rings must cover the welds, and the welds need to be inspected. If your scope of responsibility is small and you don’t cover much, you can cut back a bit – there’s no problem with that. Besides, if the medium inside poses no hazard, covering it is fine.
The top plate weld can be leveled out and then covered directly.
Are there any regulatory guidelines? ? ? Everyone working on site knows they have to do it this way, but the supervisor says a formal explanation is necessary. Moreover, the welded joint in question is a lap weld, making it completely impossible to perform RT testing; it’s simply not feasible.