×
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

API 650 Tank Repair required testing

API 650 Tank Repair required testing

API 650 Tank Repair required testing

(OP)
What are the common tests required after repairs are made to the shell of an API 650 tank? It is 40' tall and holds 10,000 barrels? The bottom course is 1/4" thick. We are planning on replacing an area 10" high by 60" long right above the tank bottom. My take on reading the code is radiography on the butt joints and dye penetrant for the shell to bottom joint. Filling it with water will be an expensive and difficult problem. Will an air pressure test or other testing still be required?

RE: API 650 Tank Repair required testing

Post this to the API Code forum.

"If everything seems under control, you're just not moving fast enough."
- Mario Andretti- When asked about transient hydraulics
http://virtualpipeline.spaces.msn.com

 

RE: API 650 Tank Repair required testing

API 650 11th edtion section 7.3.5 covers testing the shell if water is unavailable.

RE: API 650 Tank Repair required testing

Hydrostatic test may be omitted with the written consent of owner and API inspector--see API 653.

RE: API 650 Tank Repair required testing

chicopee,
It takes far more than approval or agreement of the two parties.  There is long and significant list of additional requirements to waive a hydrotest after major repairs.

pnevue,
You need to re-look at the plan.  The minimum dimension for a shell replacement plate is at leat 12 inches.  Forget the air-preesure test.  ASTs are not designed for that condition in lieu of a hydrotest.  I strongly recommend that you conduct the hydro.  It's much riskier to spill oil than water in the event a serious construction problem.  

Also, have you considered a lap welded patch at the base of the shell.  It might work for such a small tank.  My calcs say it does.  And no hydro is required.  Check it out.

Joe Tank

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