Is the N3 port of this pipe box designed wrong?
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All the great masters, shouldn’t they open their mouths on the left side?
It should be reversed. The number of heat exchange tubes is different. See GBT151, page P19. This is the last type of 8-tube pass. The inlet and outlet should be on one side.
First of all, I’m not sure if you are an equipment major. If you are an equipment major, the position of the nozzle is determined by the process major or the piping major, so I would like to ask you about the process.； Secondly, confirm whether this drawing is the final version. If it is the final version, check the design conditions and consult relevant design and review personnel about the considerations of the nozzle position in the drawing.
This should be compared with the nozzle orientation diagram. It shows that the orientation of all nozzles is inconsistent. Ask about piping or process.