For the flanges of containers containing highly hazardous media, must the minimum pressure rating be 2.0 MPa or higher?
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For the flanges of containers containing highly hazardous media, must the minimum pressure rating be 2.0 MPa or higher? If the design pressure is 0.6 MPa, does one still need to choose a 2.5 MPa grade? There are requirements for the takeover flange.
Yes. For highly toxic and extremely toxic substances, or strong permeable media, the nominal pressure of the pipe flange shall be not less than 1.6 Mpa ； For highly toxic media and Category III containers, necked butt-weld flanges should be used as much as possible
Code for structural design of steel chemical vessels 20583-2011, P437-P438; Vessel codes P22. I hope this will be helpful to you. It’s necessary to adhere as closely as possible to the highest requirements of the standards – after all, safety comes first
Thank you so much; I appreciate all your effort.
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