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


Minimum Weld clearance

Minimum Weld clearance

Minimum Weld clearance

Hi, We are Designing & constructing Refinery in Abu Dhabi. As the shell course were erected in last year December now when we are placing platform / pipe stiffener, the vertical weld clearance of 150 mm as API-650 is not achieving.

Can anyone pls tell me the as how to rectify this.
PS :- Removing the stiffener or moving the shell is not possible now.
Also pls advice if any other standard can be followed.

RE: Minimum Weld clearance

a drawing would help here to see what is and isn't possible. Is the stiffener horizontal? parallel to the weld? Can you bridge the weld?

What is the ref in API 650?

Please do a little more work yourself first.

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

RE: Minimum Weld clearance


What is your shell plate material ?

If you material is group I,II,III or IIIA there is no restriction in API 650. But if your material is group IV, V and VI there is 150 mm clearance from the vertical.

If there is no chance to modified the supports then you need to get approval from the tank designer then get the same to the client or its PMC.


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!


Close Box

Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close