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!

*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.

Jobs

API 579 Part 12 - Dent Radius

API 579 Part 12 - Dent Radius

(OP)
I am a pipeline integrity engineer working a fitness for service assessment on dents found by an inline inspection tool. The formulas in API 579 Part 12 are fairly straightforward, but I am a bit unsure what to use for the dent radius. It is stated that if the dent radius is greater than or equal to 5 times the future corroded wall thickness, the dent is determined to be a smooth dent. If it is less than 5 times the corroded wall thickness, the dent is determined to be a sharp dent. API 579 states that the radius measurement to be used is the radius at the base of the dent... I don't exactly know what that means. At this point, I only have dent length (along pipe axis) and width (along pipe circumference). What I've done so far was take whatever is smaller between the dent width and length, divide it by two, and call that the radius. However, I'm not sure if that's correct. Could somebody clarify what is exactly the radius at the base of a dent? Thank you all in advance.

RE: API 579 Part 12 - Dent Radius

Take a look at Figure 12.2. It is a measurement of the local curvature of the pipe at the base of the dent.

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


Close Box

Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close