Is there a connection like UW-13 for direct connection of Body flange to spherical heads? 1

[gh61]

Is there a connection like UW-13 for direct connection of Body flange to spherical heads?

 

[r6155]

drawing, dimensions, more details ....?
Regards

 

[gh61]

drawing, dimensions, more details ....?
Regards

Hi
Similar to the attached details

 

[r6155]

YES.

Regards

 

[GD2]

OP,
Look up Fig 1-6.

 

[r6155]

Figure 1.6 does not apply.
The OP diagram is a welding neck flange.

Regards

 

[goutam_freelance]

VIII-1 UW-13 (b)

(b) See below:
(1) Ellipsoidal, torispherical, and other types of
formed heads shall be attached to the shell with a butt
weld, or as illustrated in the applicable Figure UW-13.1
sketches (a), (b), (c), (d), and (i)

So flanged shell to head connection may not be permissible.

 

[r6155]

@ goutam

You are confused. This is a category A welded joint.

Regards

 

[gh61]

@ goutam

You are confused. This is a category A welded joint.

Regards

Can you explain more?

 

[gh61]

YES.

Regards

In which part of the code is the relevant connection detail?

 

[r6155]

See UW

 

[goutam_freelance]

@r6165

Thank you for the info. Actually, it should be a type C joint. But I never handled such a joint.

@gh61

Please see the following from Mandatory Appendix 2(Flanges), Fig 2-4

 

[r6155]

NO, NO.
You are confused.
Any welded joint on a SPHERICAL head is Category A.
Read again UW.

Regards

 

[goutam_freelance]

This is the type of welding I am referring to:


Which clause you are referring to?

 

[r6155]

Again NO
Why don't you read the text and not the sketch?

 

[goutam_freelance]

OK I give up as you are not explaining yourself.

 

[r6155]

See also figure UW-3 on the left, the spherical head.
Try to understand about spherical head.

 

[goutam_freelance]

It is a flanged connection. So it should be type C as in the figure. Type A is welded connection. This is my understanding.

 

[Firaconsortium]

It's worth considering that while typical flanged connections often use Category C joints, this may not apply in cases involving spherical heads. A Category A welded joint could be more appropriate depending on the specific head and flange design you're working with.

 

[r6155]

See my sketch