hi engineers,
Currently i'm using PVElite to do WRC 107 calculations. I'v some doubt about the WRC 107 calculations,
1.Is it need to design the vessel to perform the WRC 107 for a single nozzle?
2.Is it need to design all nozzles in the vessel? (But i need WRC 107 for one nozzle)
3.Can we perform the WRC 107 calculation a nozzle without modeling or designing the vessel?
4.Is the vessel supports need to be model for the WRC 107 calculation?
5.Is there any calculation sheets available for the WRC 107 calculation?

Shabeer,

First of all you need to study and understand the WRCB-107.

Secondly, generally client/purchaser decides, how many nozzles to be analysed for WRCB-107...Most common are inlet and outlet process nozzles.

Thanks.

Mukesh
www.theculminates.com
M: +91+9428500192

Dear shabeer,

WRC 107 or 297 or etc. analysis is required for the attachments on the vessels which are causing to have the impact load on the vessel which can generate the local stresses in the vessel at the attachments. WRC 297 calculations are limited to shell to shell connections only. By doing 107 or 297 you are calculating the stresses generated in the vessel & nozzle wall.
Basically the nozzles which are again connected with the piping can have the impact or pull load or any other dimensional load on the vessel wall in the vicinity. So you should be careful about that particular joint for which we are doing WRC calculations. Mostly all process nozzles which are connected to piping needs to be performed WRC calculations.
Regarding your question no 3, I can say yes, you can do this in codecalc where you have to put all the data of nozzle as well as the vessel on which the nozzle is attached.

Regarding your question no 4, I can say no, as the logic behind that is, it’s not the attachment which is taking continuous shock loads on it, also it’s not the attachment like the nozzles from which we have cut the portion of the shell (which leads to failure).