From time to time I've come acrros these terms Mechanical Design Pressure and Mechanical Design emperature. Have any of you a writen concept of these terms.
I haven't been able to find them in any standard, and averybody that I ask has a different version/ definition... The worst part is that I've seen stress calculations based in these terms and nobody dares to argue about what/where are these numbers coming from.
Can you give some insight?

Thanks