Flued Opening Area Replacement
Flued Opening Area Replacement
(OP)
I am attempting to perform area replacement calculations for a flued opening under Section VIII div 1. I am not sure how to handle the required thickness in the curvature in the nozzle in order to thicken the nozzle and head correctly. Any assistance would be helpful.





RE: Flued Opening Area Replacement
Cheers,
gr2vessels
RE: Flued Opening Area Replacement
You have to forsee how much flanged in/out portion be thin, the thickness of the flanged in/out portion shall not be less than that required by UG-27 and/or UG-28.
There are some requirements for the minimum depth of the flanged in openings, you will note in UG-38(b).
Now you have to satisfy UG-37. UG-45 needs not be satisfied.
Nasir
Welding Engineer
DESCON ENGINEERING LIMITED
PAKISTAN
RE: Flued Opening Area Replacement
In continution to my above email, in 2001 UG-36(c)(3)(a) was revised to also include the flued (i-e flanged) openings.
You need not to perform UG-37 calculations if flued openings are exempt by UG-36(c)(3)(a).
Nasir
Welding Engineer
DESCON ENGINEERING LIMITED
PAKISTAN
RE: Flued Opening Area Replacement