Issues related to welding and manufacturing processes for pressure vessels

A proper company should have: drawing designers, personnel responsible for developing manufacturing processes, personnel in charge of developing welding procedures, and so on. The process starts with design, verification, and review, followed by the development of manufacturing processes and welding procedures. It can be the same technical department ； Welding evaluation and welding procedure development should be carried out by personnel who work in the field of welding or have graduated from related welding programs (tasks such as welding evaluation, welding procedures, welder training, welder certification, and management of welding processes using equipment) ； You can also take a look at and learn about the standard requirements for the design, manufacturing, and production of pressure vessels, such as the TSG 07-2019 Regulations on Licensing for Units Engaged in the Production and Filling of Special Equipment, and the TSG 21-2016 Provisions for the Safety Supervision of Fixed Pressure Vessels. The scope of information available is limited; please forgive any shortcomings! ! !

It is actually best for the same person to prepare both the pressure vessel manufacturing process and the welding process, with the review of the documents being carried out separately by the process engineer and the welding specialist. Of course, the welding process can also be developed by a specialist. The general sequence of preparation is to first carry out the manufacturing processes and then welding, but welding must be addressed in advance – considering weld assessments, the welding procedures for different types of welds, the availability of welding materials, and the type of weld grooves, among other things.

The welding process is handled by the engineer responsible for welding, while the manufacturing process is managed by the process specialist. I don’t understand why the people in the factory upstairs think that it’s better for one person to handle everything – that’s complete nonsense. A welding engineer acting as a process specialist at the same time? ? It’s divided into two tasks, both of which fall under the technical department’s responsibilities; they are carried out by two people. The process engineer first determines the sequence in which the welds should be made, but if the welding engineer thinks that sequence is incorrect, the two people can communicate with each other to make the necessary adjustments

Thank you; manufacturing the parts first and then performing welding should be the standard procedure in a legitimate company

Thank you; manufacturing the parts first and then performing welding should be the standard procedure in a legitimate company

In small companies, the manufacturing process and the welding process may be carried out by the same person, but the sequence of these processes should be as you mentioned

In legitimate companies, the manufacturing process and the welding process are separated; normally, the manufacturing process is carried out first, followed by the development of the welding process. Of course, the two parties can communicate in advance

There are two teams: the process engineers and the welding engineers, with each team responsible for one of the tasks. There is no rule specifying which task should be carried out first; it’s best to communicate with each other regarding this. It’s fine for one process engineer to handle both the cold working processes and the welding processes, but it’s better to have separate persons in charge of each.

It is not possible in practice to allow a process engineer to prepare both welding processes and manufacturing processes at the same time, as there isn’t enough work to do that

Personally, I think the manufacturing process should come first, followed by the welding process