×
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

Pipe support attachments to Chapter IX pipe

Pipe support attachments to Chapter IX pipe

Pipe support attachments to Chapter IX pipe

(OP)
Are full encirclement pads required for pipe support attachments to Chapter IX piping similar to that required for Pipeline codes. The code does not acually say they are required but it is a point of debate in the office.

RE: Pipe support attachments to Chapter IX pipe

The primary intent of the circumferential welds only rule is, I believe to avoid other stresses aligning with the hoop stress direction, generally in relatively thin wall, high yield applications such as B31.4.

Vis-a-vis Chapter IX pipe .... high pressure, very heavy wall, common sense says don't screw around with local stresses. It will be a boom, rather than a bang. However, thinking of Lame pressrue equation, that accepts that in heavy wall there is a reduction of hoop stress across the wall and less at the outside (assumed constant in many codes). Does that suggest a longitudunal weld may be ok ?

For comfort, I would still use circ. only.

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