Hello

I only want to know where to find more information about a Note that appears on Noz. Calcs. the note said:
Post Weld Heat Treating is required for this Nozzle Geometry!

Thanks in advanced
Regards

Hello fernandiux

The requirement for Post Weld Heat Treatment depends (among other things) on:

1. The material
2. The minimum design metal temperature
3. The thickness of the component
4. Does the vessel contain a lethal substance

In the case of nozzles, the programme looks at the nozzle, the vessel and the re-pad.

This applies in the main to carbon steels – non austenitic steels.

PV Elite looks at all these factors to determine whether heat treatment is required.

Now, how does one specify heat treatment in PV Elite? If you have the ‘General Input’ tab selected, go the field called ‘Longitudinal Efficiency’. A little button opens up to the right with three little dots. Click that button, and you will be able to specify PWHT. If the vessel component is subject PWHT, then the nozzle will also be heat treated.

For details of the requirement for PWHT, we direct your attention to ASME Section VIII, section UCS-56, and also UCS-68. There are other paragraphs that apply, but these paragraphs will spell out the main principles.

hello

i need to know is PWHT mandatory for skirt parts?
as i checked in code it is just mandatory for the part which pressure parts welded to non pressure parts (UCS-56 C,UW-29,UW-3,UG-11,ULW-26) but Pvelite consider PWHT for skirt joints (thickness higher than 38)!

Hi mheng!

No PWHT is required for weld joint of of non pressure parts,