Welded Joint Between Two Different Standards Pressure Vessels 4

[TOMMY2010]

Hello professionals,

Recently I am facing a new situation where a welded joints between two pressure vessels manufactured as per two different standards. We need to weld a nozzle from the first pressure vessel (Vessel A) to the facing nozzle in the second pressure vessel (Vessel B)

- According to its Inspection data sheet (IDS) Vessel A is manufactured according to ASME VIII Div II and Vessel B is manufactured according to AD 2000 Merkblatt.

which standard we have to follow for welding and welders qualifications ?
Which acceptance shall we use for such welding ?

Appreciating your help,
Thanks

 

[Guest102023]

Bizarre situation no doubt.
First step is to establish the jurisdictional boundaries, not just between the vessels but between vessels and piping.
Beyond that I don't know what to tell you.

"If you don't have time to do the job right the first time, when are you going to find time to repair it?"

 

[SnTMan]

Muhammed Elsayed, I don't know about AD 2000, but Sec VIII, Div 1 scope typically stops at the connection to piping or other vessels, see U-1(e)(1)(-a).

I'd say brimstoner has it right, you need to find out what the jurisdiction requires.

Regards,

Mike

The problem with sloppy work is that the supply FAR EXCEEDS the demand

 

[MintJulep]

Would you have a question if you needed to weld a pipe to either of the nozzles?

Would you have a question if you needed to connect the nozzles together with a pipe?

If the length of that connecting pipe is infinitesimally short?

 

[r6155]

The user has the responsibility to define this situation.

Regards

 

[TOMMY2010]

Appreciating your help.
@brimstoner, @SnTMan, @MintJulep,
@r6155 by the user do you mean the owner or the main contractor ? can you clarify what you mean ?
Thanks a lot.

 

[r6155]

Muhammed Elsayed
Please, see in ASME VIII Div 1 the terms "user" and "owner".

Regards