×
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

Boiler Lower Drum Damaged (Repair?)

Boiler Lower Drum Damaged (Repair?)

Boiler Lower Drum Damaged (Repair?)

(OP)
Some tube leaking near to the drum caused damage to the drum shell (lower drum).

The boiler rate is 100ton/h @ 24bar (220462 lbs/hr @ 348psi).

The nominal drum thickness is 31.7mm (1 1/4") and the minimum thickness at the damaged area is around 6mm (1/4") !!

What should be the recomended repair? Welding according ASME PW-40.3, or replace part of the shell?

Attached photo of the damaged region.

Kind regards,
RR79

RE: Boiler Lower Drum Damaged (Repair?)

Recommend NBIC Method 1.

RE: Boiler Lower Drum Damaged (Repair?)

Agree with stanweld. However, it looks to me that you have a substantial amount of external corrosion damage in this area from wet ash conditions. I would strongly suggest you clean this location and obtain thickness readings on the terminal tubes and the header. You may have more damage from wastage.

RE: Boiler Lower Drum Damaged (Repair?)

(OP)
Thank you for your answers!
We used NBIC 1, and the boiler is operating fine since yesterday.

Regards,
RR79

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