Design of a Hydrotest Test Ring using Aspen B-Jac

[PartoTvs]

Hi everyone,

I've designed a test ring for the hydro test of a tube bundle using Aspen's Mechanical Component Design.

my question is why does it offer 2 thicknesses for the loose flange and which one should be used for fabrication?

I mean I can see " Nominal Flange Thickness" and " Calculated Flange Thickness" in the result report . what's the difference between these two? as far as I know there's no standard dimensions for this type of flanges.

this is an example of the results I've got:

Flange calculated thickness: t = (M*Y/SFO*B)**0.5 = 42.8 mm
Flange nominal thickness: tnom = 68 mm

 

[GenB]

I have the same problem. I have plate in inches, 0.400 Adding some corrosion allowance goes to 0.450 but nominal says 0.500. Ha, the next available commercial standard and nominal plat is 0.500. That may be your answer. If you think the commercial siz is not accurate disregard and use the next available STD size. I answer to your example. The flange vs blind cover have different calculations and the blind is always thicker. They have no relations in calculating thicknesses other than being bolted one to the other.

General Blr. CA,USA

 

[heatexguy]

It is likely the flange rigidity calculation is driving up the nominal thickness.