Regarding the weld joint diagram of pressure vessels
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If a section of piping is connected to the external pipe of a pressure vessel using a flange, is it necessary to indicate that section of piping when drawing the weld joint diagram? I read in the Q&A materials on pressure vessels that the connection diagram only needs to be drawn up up to the first flange of the external piping of the vessel. What do you all think is the correct view?
No need; refer to the provisions in GB150 regarding the scope of application for pressure vessels
The contact diagram only needs to be drawn up at the first flange of the external pipe connected to the container
It is not necessary; the connection diagram only needs to cover the first flange of each pipe connection in the container.
There is no need to prepare a piping connection diagram, as stipulated in Article 2, Paragraph 4 of the tolerance regulations
I don’t think it’s necessary, but some inspection personnel require that everything be made according to the drawings.