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For DIN 28011 and DIN 28013 I found out the following dimensions: r = inside knuckle radius R = inside crown radius h = Straight flange height H = total height DIN 28011 Klöpper bodem, decimal heads acc. (≈torispherical) r = 0,1D R = D h ≈ 3,5 x s H = 0,192D + s + h DIN 28013 Korbbogen...

For a heat exchanger I want to use standard ANSI B16.9 caps. (design acc to ASME VIII) To check the thickness, I need to know the nominal dimensions of these caps.(inside crown and knuckle radius) And, is it a (semi) eliptical or thorispherical type? For the detail design of the heat...

Mandatory appendix 28 show us alternative corner joint details for box headers for air cooled heat exchangers. For lethal service categorie B and C welds shall be butt joint type (UW-2(a)(1)(b)) and has to be fully radiographed (UW-2(a)) Could appendix 28 also be applied for lethal service...

Hello, For calculating the tubesheet of fixed tubesheet heat exchangers (integrated with the shell) again I'm struggling with the Shell Bending Stress due to Joint Interaction [Sigmasb]. (acc to UHX-13.5.11 Step 11) Because of this value (negative and positive) I have to increase the tubesheet...

par 7.8.2 already answered my question.

Does API660 allow loose ring flanges as a girth flange for shell and tube heat exchangers? Welding detail according to attachement. (no hydrogen) The girth flange isn't an attaching connection, with this is ment the nozzles etc, is it? Quote API660: 9.5.3 All welds attaching connections to...

Thank you for the clear explanation and your quick reply. With 90% of the yield the hydrotest-calculation is suitable for this vessel. You wrote that it's common to use this 90%. Does this mean it isn't writen in the ASME code?

design data: - applicable design code ASME VIII Div 1 - hydrotest pressure acc to UG 99 and PED The design calculations (allowable stresses according to ASME II part D) indicates a Maximum Allowable Pressure (new and cold) lower than the applicable hydrostatic test pressure. Is it accapbable...