ASME Section VIII Div. 2 - Internal Piping

[JXWu]

Dear experts,
I am working on a spherical pressure vessel constructed to ASME VIII Div. 2.
Min. Design metal temp. is -45°C.
There are several nozzles at the top of the vessel. One of them is a nozzle for a level transmitter with a stilling well that goes into the vessel.
My question is: do the welded joints below the nozzle fall under ASME Section VIII Div. 2?
I have attached a sketch for reference.
Thanks and regards,
WuJX

 

[CKerr]

The code only applies to the vessels themselves; internals are not part of the code. However, the code is usually used as a guideline for the design of internal equipment. It is up to the engineers/company to deicide if the additional costs of code compliance (like impact testing) are worth it.

 

[JXWu]

CKerr, thanks for your response.

 

[r6155]

See ASME VIII Div 2
1.2.3 (b) Where non-pressure parts are welded directly to either the internal or external pressure-retaining surface of a
pressure vessel, the scope of this Division shall include the design, fabrication, testing, and material requirements established for non-pressure-part attachments by the applicable paragraphs of this Division (see 4.2.5.6).

Please, use your engineering judgement.

Regards