×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Jobs

Nozzle Weld Acceptable Types

Nozzle Weld Acceptable Types

Nozzle Weld Acceptable Types

(OP)
I have a hillside nozzle in a shell (nearly tangential) and we are having trouble getting to the fillet weld on the inside of the shell/pipe junction because the pipe is so close to the shell. In UW16 I didn't see any type of weld that allows an inside penetration without having to weld the backside (the pipe to shell location on the inside), does anyone know of a weld type that allows this, or is this required by code? It looks like it is required but thought I would ask here if anyone knew of a way to do this without making that inside weld?

Thanks.

RE: Nozzle Weld Acceptable Types

(OP)
Maybe an easier way to phrase my question; can you have a nozzle with internal projection that is full penetration and fillet on the outside, but omit the internal fillet?

RE: Nozzle Weld Acceptable Types

No, because of local stress concentration. Why not trim the nozzle flush with the ID surface?

RE: Nozzle Weld Acceptable Types

Trim and backing bar for full penetration weld from outside only

RE: Nozzle Weld Acceptable Types

You may need extra weld from the outside or even a reinf,pad.

RE: Nozzle Weld Acceptable Types

(OP)
Can't trim the nozzle flush because its an internal projection.
Yeah I want to do full penetration weld from outside only, design passes without repad or too much outside weld.
I just didn't see a design that allows for internal projection without some weld (43) on the backside, didn't know if those figures were the only acceptable types of through welds, or if those are there as examples of if you want to take advantage of the internal weld credit... mine passes without the internal credit if that is the case.

RE: Nozzle Weld Acceptable Types

I do not see a problem leaving inside projection if full penetration is attained. You will have to calc. Strength of the welds. On the groove and outside fillets,' genblr.

RE: Nozzle Weld Acceptable Types

You will need to make sure that local stress concentration will not result in cracking at the transition between the nozzle projection and the shell ID surface with no fillet. This is why the figures in UW-16 show a fillet weld on the ID surface where the nozzle projection to avoid a sharp transition, regardless of full penetration.

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Resources