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!

*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.

Jobs

Uphill and Downhill progression in Pipe line welding

Uphill and Downhill progression in Pipe line welding

(OP)
Dear Welding, Pipe line Experts,

Please confirm whether 1104 or B31. 8 mandates downhill welding. We have a job in one S/ D to replace around 70 mtrs of corroded transfer pip lines in different locations. Material is API 5L X 65. As it is only 10 nos of 16" joints 9. 35 wall thickness we are planning and confident to complete the joints with E70S3 filler root and E7018 filling and capping in uphill progression. We have previously qualified WPSfor the same. But as per client it is not possible to do uphill progression in pipe lines. But I believe procedure of downhill is following due to time consideration only not based on the code. Your valuable comments is requested.

RE: Uphill and Downhill progression in Pipe line welding

Neither ASME B31,8 nor API 1104 mandate downhill progression. Downhill progression is done with cellulosic electrodes EXX10/EXX11. Your client is seriously misinformed.

RE: Uphill and Downhill progression in Pipe line welding

Generally speaking, the contractor is free to do as he pleases provided the WPS is properly qualified. In short, show me what you propose will produce the desired results. It it works, your good to go.

Best regards - Al

RE: Uphill and Downhill progression in Pipe line welding

In situations like this, where the client (or co-worker) insists that something can or cannot be performed due to code, I challenge them to find the requisite clause in code. Case closed.

RE: Uphill and Downhill progression in Pipe line welding

(OP)
Thanks for the 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


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