Flange calculation as per ASME VIII div.1
Flange calculation as per ASME VIII div.1
(OP)
My problem is if I must consider the flange thk corroded or not.
Many thanks for Your help
Many thanks for Your help
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Flange calculation as per ASME VIII div.1
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RE: Flange calculation as per ASME VIII div.1
See Appendix E for suggested good practice regarding corrosion allowance.
RE: Flange calculation as per ASME VIII div.1
RE: Flange calculation as per ASME VIII div.1
Personally I consider that corrosion in the flange may take place only up to the inner diameter of the gasket, so that in my opinion the effect of that corrosion may be neglected.
Consider also that if you have a raised face (and of course you shall not include the raised face thickness into the flange thickness for calculation), then you may assume that corrosion will only consume the raised face.
Moreover, as always, the answer could depend also on how much corrosion allowance is to be provided. In highly corrosive conditions(CA>3 mm) it may be wise to consider a corroded flange thickness (but still using the raised face, if any, as a kind of 'consumable').
prex
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