Grinding Circumfrential Seem Flush

[engpes]

I have an ASME VIII, Div 2 Part 5 design by analysis vessel. For a number of reasons I am required to weld a support saddle on top of the circular seem (RT1 full radiograph). The wall thickness is 3.5 inches, so the seem is fairly wide.

My question is:

1.) Are there any ASME code violations with grinding the circumferential seem flush to accommodate welding the saddle on the vessel?
2.) I am assuming I would need to radiograph the seem after girding it flush if allowed, right?

Thank you for your help in advance.

 

[racookpe1978]

If you radiograph the seam before grinding, why would you feel like you need to do it again afterwards?
The outside weld (probably a fillet weld joining the support to the PV), will be in the way of a post-attachment RT exam. Do the pressure weld RT before the next weld outside goes over it.

 

[engpes]

But no issue with grinding the weld flush?

 

[TGS4]

1) No
2) No

 

[DekDee]

If MT or PT are required you will need to do so after the weld is ground flush.

 

[r6155]

Good engineering practice is RT after grinding weld.

Regards
r6155

 

[chicopee]

Hopefully, it is not a tapered seam that you are trying to grind.

 

[r6155]

The radiographic film shall be compared with actual weld surface if there any question.

Regards
r6155

 

[weldstan]

Do be careful when grinding. I've seen many an over-zealous grinder remove too much material.