×
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

Studding Outlet - Max Bore

Studding Outlet - Max Bore

Studding Outlet - Max Bore

(OP)
Hello, I am designing a conical shell that will have four 300# 1" studding outlets spaced around it at the same elevation. Due to process/wear (we use an insert to protect the SO and shell from wear otherwise we'd need to repair too often) requirements, the process engineers have asked me about opening the bore on the studding outlets up to 35+mm. I'm relatively new to vessel design so I sat down and took a stab at the calculations from UG-36 through UG-42. If I did it right then 35 is no problem, however, I do not think I did this correctly because not only is 35 not a problem but it seems like I can make the studding outlet ID whatever I want.

Am I using the correct section of the code and is it possible I'm using it incorrectly? The housing has an ID of 300 mm so it isn't very big, design conditions are 18 bar and 210 Celsius. Both the studding outlet and the shell are 2205. I calculated an area required (A) of just 87.5 mm^2. I also got A1=262.5 mm^2 and A2=659.06 mm^2. I stopped here and rechecked everything I did and ended up not bothering to calculate A3 or either A4. If I am incorrect I'm guessing I found incorrect values for tr, tn and/or trn.

The closest sketch in UG-40 to the configuration is a-1 though the opening in the shell matches the bore of the SO and there is a v-butt weld between the two.

Thank You,
Tom

RE: Studding Outlet - Max Bore

Provide a scale sketch or dwg view (elevation view most likely best) of the proposed head and nozzle positions. Unfortunately, your configuration is not clear from your description above.

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