×
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

Tube Rolling and Pop-a-Plugging a Success

Tube Rolling and Pop-a-Plugging a Success

Tube Rolling and Pop-a-Plugging a Success

(OP)
thread794-280095: Expansion Versus Weld Repair

Just to let you know, (because Yamoffathoo cannot), inspections of four degraded bleed condenser tube sheets confirmed that control valve modulation caused thermal transients in the un-rolled tube sections that mechanically fatigued the root of the seal welds, flooding the tube annuli causing progressive collapse and released tubes to migrate down the tubesheet.

Also confirmed was that mixed mode operation (sprays and reflux or leaky rolled tube spray and reflux) caused core tube flooding and steam void collapse that resulted in fretting between tubes and baffle plates.

Several bleed condenser tubesheets have been successfully rolled, severely buckled and/or significantly migrated and/or significantly fretted tubes have been Pop-a-Plugged and placed back in service.

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