Dear All members,

I need some advice regarding matter below: could anyone explain to me.

In the Material of Construction list , the nozzles neck shall be A106GrB seamless pipe.
My question is the following;
1)In the case I have nozzles with size 24",I am constructed using plate A516 Gr70N,same with vessel shell plate and welded, is it meet to the ASME Code?
2)In case of manhole 20" or 24" to be constructed using plate as above and welded. I think Manhole is not consider as the vessel nozzle. Are you agreed? Could you brief explain to me.

_________________
Faizol
(PV-elite User)

Faizol,

No where in the code it is mentioned that only SA 106 Gr B can be used for nozzle neck and SA 516 is prohibited for nozzle neck.

Fabrication of nozzle neck by using a pipe or plate material is based on ease of fabrication and/ or availability of material.

you need not just simply follow PV elite as it is only a tool for our help and not the design/ construction code.

Regards