Contact US

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.

Students Click Here

PWHT procedure for new nozzle

PWHT procedure for new nozzle

PWHT procedure for new nozzle

We have an exchanger that we will install an additional drain nozzle. According to construction drawing, all welds must be PWHT'd. There is a required reinforcement pad on this nozzle. What is the accepted PWHT sequence? PWHT first the nozzle weld to the shell then PWHT again after welding the reinforcing pad? Or PWHT of the nozzle weld will be sufficient? Shall I PWHT with the pad on?

RE: PWHT procedure for new nozzle

Is this exchanger a pressure vessel? If not, the answer to your question is to perform the PWHT after all welding is completed (weld the nozzle and weld the repad). You always want to minimize the number of PWHT cycles.

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! Already a Member? Login


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