[MW:4892] repair of toe crak

[ali asghari]

Dear All

in my project, after plate girder fabrication( with thickness of 35 to 50) in Tjoint that have double bevel joint, longitudinal crack in parent metal( that discontinuted) detected by MT in 6M length.

with grinding of a small part , it finded that the depth of crack is approximately 7mm.

now how can i remove this doubt that may be there are branches of crack in lower depth or close the root of double bevel?( how can i trust to UT to detectability?)

does anyone have procedure or recommendation about removing and repair of them?

regards

--
To post to this group, send email to material...@googlegroups.com
To unsubscribe from this group, send email to materials-weld...@googlegroups.com
For more options, visit this group's bolg at http://materials-welding.blogspot.com/
The views expressed/exchnaged in this group are members personel views and meant for educational purposes only, Users must take their own decisions w.r.t. applicable code/standard/contract documents.

[george....@gr.bureauveritas.com]

UT is the best solution. Detection will be done from the flange surface of the T joint.
You may start with longitudinal waves and then recheck with transversal waves


Dr. G. Dilintas - Authorized Inspector Supervisor
I&F Regional Technical Manager
Bureau Veritas Piraeus - Greece
Tel: +30 210 40 63 113/4
Fax: +30 210 40 63 118
Cell: +30 69 44 64 62 04
ali asghari <asghar...@gmail.com>

ali asghari <asghar...@gmail.com> Sent by: material...@googlegroups.com 20/04/2010 09:34 Please respond to material...@googlegroups.com

To material...@googlegroups.com cc Subject [MW:4892] repair of toe crak Ref

[Ramani, Vaidyanathan (Kuwait)]

The options are removal by grinding followed by PT or MPI. PT if properly used can give best results. Keep doing the grinding followed by test till there are no recordable indications. UT might not be the best method for cracks.

 

With Regards,

V.Vaidyanathan
Welding Inspection Engineer │ Worley Parsons│Kuwait
( +965 238 61657 │ Fax. +965 2398 1695
www.worleyparsons.com

---

*** WORLEYPARSONS GROUP NOTICE *** "This email is confidential. If you are not the intended recipient, you must not disclose or use the information contained in it. If you have received this email in error, please notify us immediately by return email and delete the email and any attachments. Any personal views or opinions expressed by the writer may not necessarily reflect the views or opinions of any company in the WorleyParsons Group of Companies."

[ali asghari]

how much does exceed the accumulated length of crack, that the whole length of the weld shall be gouged and cut out?

in which refrence document, it is mentioned(preferably in structural fabrication)?