×
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

Skirt Opening/Access Reinforcement

Skirt Opening/Access Reinforcement

Skirt Opening/Access Reinforcement

(OP)
Hi all

Would anybody please give me the design basis on the skirt access/opening reinforcement on vertical vessel ? How the reinforcement is calculated ? Any good reference material or book related to this topic ???? Thanks in advance.

RE: Skirt Opening/Access Reinforcement

Look at EN 13445, Part 3, 16.12. This has a section on skirt openings.

RE: Skirt Opening/Access Reinforcement

The area removed is the hole diameter times the skirt thickness.  the area required to be replaced is the same.  The replaced are is in the form of repad and the nozzle neck.  This is a conservative way to reinforce the opening.  the welding must be sized to resist the design forces.  Vertical compression is the controlling factor in this case.   

Joe Tank

RE: Skirt Opening/Access Reinforcement

If the vessel is subjected to decent wind or seismic load or if it is tall tower, then you have to check the stress in the skirt opening.

Compute the cross-sectional area and sectional modulus of the remaining metal. You have to find the weakest cross-section and then apply the

force/area + moment / section modulus to get the stress in the section.

Btw, if you have PV Elite software you can analyze stress in vessel skirt due to multiple openings. But, if you follow basic engineering principles you should be able to do by hand as well.

best regards,
Mandeep Singh

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