Welded structure of pressure-bearing parts in pressure vessels
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I would like to ask whether, due to process requirements, a structure with incomplete welding on one side at the weld area of the pressure vessel head is acceptable. Is such a welding pattern permitted?
How to deal with leakage under pressure? :L
Single-sided welding is acceptable, but incomplete penetration is not
What specific type of connector is it? Can I get a picture? For Type A and B joints, lack of weld penetration is not allowed.
By adding a gasket and leaving enough clearance, it is possible to achieve full penetration welding.
TIG welding as a root pass, or using a backing layer as mentioned above, can both ensure full penetration. I’m not sure which situation you’re referring to? Incomplete welding is not acceptable.
It can be explained as a process access point, which can be sealed and welded when not in use, provided that the medium is not extremely or highly toxic, and the design does not specify conditions such as stress corrosion
It’s equivalent to creating a hole in the circumferential seam of the head, only this hole has a special shape
If there is under-welding throughout the entire circumference, then congratulations – you need to redo it