×
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

Re-Rating Tank

Re-Rating Tank

Re-Rating Tank

(OP)
i am currently doing a study where i need to verify the calculations done to re-rate a tank due to annular plate corrosion.

i have found a section pertaining to this in API 650 - section 5.5.

the formula seems a bit difficult to understand, or am i not looking at the correct section?

it should deal with a calculation relating the re-rated liquid level and the annular plate corrosion.

Thanks in advance.  

RE: Re-Rating Tank

(OP)
so i just reviewed API 579 as well and there is a section in there for Storage Tanks.

it is section A.6.

anyone can confirm?

RE: Re-Rating Tank

Have you determined why the annular plate was used in the first place?

Annular plates are required on certain large tanks (5.5), are sometimes used for seismic resistance (App. E), are sometimes used to lower stresses in heated tanks (App. M), and are sometimes used simply due to customer requirements.

You might also check if API-653 has specific requirements for annular plate design or re-design.
 

RE: Re-Rating Tank

(OP)
to be honest the data i have so far is limited. i am just arranging what formulas i will have to use. in addition the initial design data from the tank may be difficult to obtain.

it is for a large tank. API 653 did not go into any detailed calculation or explanation. it provided guidance on what should be done if a repair is required but nothing in depth.

sorry for the questions but i am junior engineer.   

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