×
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

Non Standard reducer B31.8

Non Standard reducer B31.8

Non Standard reducer B31.8

(OP)
Dear Experts,

I'm designing a pig launcher according to ASME B31.8 which the conical section is not standard and B31.8 don't address any calculations for this component. So, how thickness will be calculated?

RE: Non Standard reducer B31.8

Mans1987,
Part of what you wrote, "the conical section is not standard" and I wonder why not?
What size is the large section and what size in the pipeline?
Why aren't you purchasing an "Off-The-Shelf" Reducer that matches your Pipeline wall thickness?

Sometimes its possible to do all the right things and still get bad results

RE: Non Standard reducer B31.8

If you're using non standard piping components then you go down the design route as noted.

I've seen company standards where conical items are pre designed, but without them you need to do a pressure vessel design or a non standard piping design to b31.3.

Remember - More details = better answers
Also: If you get a response it's polite to respond to it.

RE: Non Standard reducer B31.8

(OP)
Most likely we will design it as a pressure vessel. Thank you for your replies

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