standarizing nozzle loads for vessels
standarizing nozzle loads for vessels
(OP)
Hi all,
We are a pressure vessel manufacturing company, I want to standardize the nozzle loads for our steam drums for a range of pressure and temperatures.
Can you guys please tell me what is the procedure to standarize the nozzle allowable loads for the nozzles of a vessel so that when piping team designs piping they can use those allowable loads and do the piping at their end.
We are a pressure vessel manufacturing company, I want to standardize the nozzle loads for our steam drums for a range of pressure and temperatures.
Can you guys please tell me what is the procedure to standarize the nozzle allowable loads for the nozzles of a vessel so that when piping team designs piping they can use those allowable loads and do the piping at their end.





RE: standarizing nozzle loads for vessels
RE: standarizing nozzle loads for vessels
If HP drum thickness was selected for the tube efficiencies you may not have too much problem in getting the piping loads by the shell wall if you select the location of the nozzle on the untubed side.
In case the HP drum wall thickness was welected for internal pressure only (no tubing), you may need to assume some pre-loads and check by calculation (WRC 297, PD5500 or FE-Pipe),and assign the acceptable & reasonable loads to the piping section.
Mainly the drum nozzle acceptable loads are very limited, and pipe should have sufficient flexibility.
Most of the large nozzle loads come from the inproper pipe/tube arrangement. I guess working on that side will eliminate large loads on the nozzles.
Ibrahim Demir
RE: standarizing nozzle loads for vessels
Ibrahim Demir
RE: standarizing nozzle loads for vessels
TEMA says that laods will be assumed at zero for design unless the customer gives us values.
RE: standarizing nozzle loads for vessels
Practically speaking it is of little use, but it might meet your needs.
Nozzle loads can (and usually do) consist of three loads and three moments applied simultaneously, see WRC 107 for example, and you can only evaluate particular load cases, not determine allowables.
Regards,
Mike
RE: standarizing nozzle loads for vessels
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"Ugly foot fungus" metaphor !!!!
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RE: standarizing nozzle loads for vessels
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