tema tubesheet thickness - G parameter

[Matrix_93]

Hello,
In the calculation of tubesheet thickness by TEMA "R", I have a heat exchanger BET Type (without rear main flanges) with fixed tubesheet not extended and floating tubesheet not gasketed.
If I read TEMA I can see for all floating tubesheet I have to use G for floating tubesheet = G of fixed tubesheet, but in my case I have fixed tubesheet O.D. = 1500 mm and floating tubesheet O.D. = 1300 mm.
This implies a great increase in thickness of floating tubesheet and we already have forgings in our workshop so I want to try to avoid this thing!
It is possible to use a different G value for my case?

 

[SnTMan]

Matrix_93, yes, it's possible, but it won't meet TEMA. As I recall even Part UHX requires both tubesheets to be the same thickness.

A person could ask, "How do you already have forgings for which calculations apparently have not been performed?"

What are your contractural requirements? You may be eating one or more of your forgings.

Regards,

Mike

The problem with sloppy work is that the supply FAR EXCEEDS the demand