Why is the pressure rating of the flanges used in some petrochemical applications very high, even though the working pressure there is low?
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In chemical plants, some tanks operate at very low pressures, only a few kilograms, but the pressure rating of their flanges is high, with some using 5 MPa or 11 MPa. Are there any standards for selecting such flanges?
The nominal pressure of the flange does not represent the maximum pressure it can withstand; temperature and material also play a role. https://bbs.hcbbs.com/thread-2959259-1-1.html
I know that the nominal pressure is determined based on the maximum pressure, temperature, and material. What I want to know is whether there are regulations specifying that for certain media such as those that are flammable, explosive, or toxic, the minimum flange pressure rating must be at a certain level, in addition to considering only the maximum pressure and temperature
This post was last edited by henglinkou on 2020-6-10 at 14:26. Each case needs to be analyzed on a case-by-case basis; the design pressure is influenced by many factors, and it is necessary to take the process into account in order to determine the maximum pressure that the equipment might experience. Please specify what the material medium is, as well as what the maximum operating temperature and pressure are Also, what is the position of the equipment in the process – is it a device downstream of the pump? How is the safety valve set up? Wait