×
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

ASME Appendix 2 Fabricated Flanges

ASME Appendix 2 Fabricated Flanges

ASME Appendix 2 Fabricated Flanges

(OP)
A flange is designed to ASME Code Sect. VIII Div. I, Appendix 2 and manufactured in 3 x 120° segments welded together.
Do these butt welds require any NDT? Any references for this construction?
Thank you

RE: ASME Appendix 2 Fabricated Flanges

weed78, you do not mention materials or type of flange, but if a hub flange your proposed construction is specifically prohibited by Appendix 2, para 2-2. Also the Part governing the material (UCS for example) will specify whether RT is required, based on material thickness. I recommend you read 2-2 carefully as well as whichever Part covers your materials.

Ring flanges are often made as you propose.

Regards,

Mike

RE: ASME Appendix 2 Fabricated Flanges

(OP)
Thanks Mike,
In this case we have a 2 1/2" thick 304 SS flange and we would like to make it from 3 plate segments, no hub. The only issue, I believe, is radiography, and I just can't see this type of construction addressed anywhere. Do we need radiography of the three 2 1/2" thick welds?

RE: ASME Appendix 2 Fabricated Flanges

weed78, Part UHA governs SS materials, UHA-33 governs radiography, which in turn refers to UW-11, requiring RT of buttwelds over 1 1/2" thick.

While it may not be explicitly called out I would consider this a catergory A joint, and would full RT.

In any case, I would full RT these welds regardless of specific requirements for my own piece of mind.

Regards,

Mike

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