×
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-653 Hydrotesting Required - bottom-shell weld repair

API-653 Hydrotesting Required - bottom-shell weld repair

API-653 Hydrotesting Required - bottom-shell weld repair

(OP)
Under API-653, 12.3.1 When Hydrostatic Testing is required, then 12.3.1.2.e. It states "When removal and replacement of any part of the weld attaching the shell to the bottom or to the annular plate ring."

But then under 12.3.2 When hydrostatic Testing is Not Required.  See 12.3.2.4.1.a. and b. gives examples of Shell to Bottom Shell Repairs that can be made without needing to hydrotest afterwards.

Which is it?  Can we make shell to bottom weld repairs (in accordance to 12.3.2.4.1.a or b.) without having to hydrotest the tank afterwards?

We have 2 A.I.'s that have differing opinions.

Thanks

jcneel

RE: API-653 Hydrotesting Required - bottom-shell weld repair

It looks like part of the language referenced was deleted by Addendum 2.  You might check if that eliminates the problem.

RE: API-653 Hydrotesting Required - bottom-shell weld repair

Addendum 4 moved some of the langauge around.  He's what it means... removal and replacement of shell-to-bootom weld is a major repair that triggers a hydro.  But, there are specific hydrotest waiver procedures that may be employed IF a long list of additional requirements are met.  The list includes obtaining engineering approval, management approval, having materials of adequate toughness at the DMT and the use of additional NDE.  Obviously on of your AIs is wrong and gotta figure out which one.

Joe Tank

RE: API-653 Hydrotesting Required - bottom-shell weld repair

(OP)
Looking at Addendum 2 (Dated Nov 2005), I can see where this contradictory information was revised.  Which addendum 4 is being refered to here in the second repsonse?  December 1999?  Or is there another Addemndum 3 and 4 that I do not have.  We obtain our API documents from IHS and I have just downloaded the Addendum 2 - but do not see any higher addendums listed.  Where can I find out what is the latest edition that is currently in effect?

Thanks.

jcneel

RE: API-653 Hydrotesting Required - bottom-shell weld repair

My apologies.  I meant to say Addenum 2, not Addendum 4.

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