×
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

Xray film interpretation

Xray film interpretation

Xray film interpretation

(OP)
I was given an xray film of an electric flash welded pipe.  Everything looks good except for an area where there seems to be some metal loss adjacent to the weld. First thing that comes to mind is corrosion.  However knowing my boss that seems too easy. (he likes to give the new engineers small "homework" assignments like this)  Is there anything else that could have caused this dark spot. Another thing that threw me off was that this spot has a bit of a rectangular shape to it.

RE: Xray film interpretation

nise05;
I presume this is pipe that is in service, if not, let us know. If this is an existing in-service pipe, the suspect location could even be internal wastage from erosion (depending on the fluids in the pipe).

Tell your boss you want to perform ultrasonic testing of the suspect location to confirm what you are seeing on the RT film.

RE: Xray film interpretation

Metals Handbook Vol. 11 has a chapter on Radiographic Inspection.
It is a good source.
Check that out before giving your boss an answer.

RE: Xray film interpretation

Assuming you mean electric resistance welded pipe, try reviewing manufacturing pipe methods to see whether there is anything that could lead to the indication, for example scarfing.

Steve Jones
Materials & Corrosion Engineer
http://www.pdo.co.om/pdoweb/

RE: Xray film interpretation

I trust that your x-ray has a calibration visible so that you can gage the size and depth of the indication?
What about a visual exam report of the OD condition.  A handling mark from erection?

= = = = = = = = = = = = = = = = = = = =
Plymouth Tube

RE: Xray film interpretation

Are you seeing the penetrameter placed on the film,or is it the impression of the electrode which might have formed on the pipe.

Since you are in the learning phase,it is best advised to have a prior knowledge of the job i.e visually inspect the workpiece,know a little about the processing details,(a casting,forging,weldment or heat treat defect etc) before you begin to read the film.  

Save water Drink Beer

RE: Xray film interpretation

Can you take a digital photo of the radiograph and post it here, i'll bet that would solve the mystery.

RE: Xray film interpretation

nice05,
Is this the logitudinal seam of an elctric resistance welded pipe or a circumferential flash butt weld? Are you sure that the indication is outside the the fusion zone?

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