Thursday, April 7, 2011

Re: [MW:10623] replacement of UT by RT

For projects, replacement of one NDT technique to another is subject to company approval or as per customer welding and fabrication specification. For example Usually for carbon steel material, MPT may be replaced by LPT.

However, practically speaking UT cannot be replaced by RT (as a blanket cover for all the requirements). It can/may be replaced on case to case bases.
UT can find planer defects better than RT. RT is a hazardous technique.RT is a slow process. Below are few examples where UT cannot be replaced by RT.

1.  Grooves with high depth to width ratio.. as there are more chances that defect would be parallel to RT beam.
2.  During laying of pipes (relay, Jlay etc)     

Best regards

On Thu, Apr 7, 2011 at 8:49 AM, asad azmi <azmiasadayub@gmail.com> wrote:
Dear ALL,
 
Can we replace UT by RT for any weld joint.
 
can somebody expalin me advantage/disadvantage of UT over RT.
 
Thanks and Regards
 
Asad Azmi

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