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Re: [MW:13856] minimum distance limitation between two weld joints

By Materials & Welding
Dear Murat:

If you apply PWHT on one (or both) of the welds it will make
things less critical.

One of the most important issues of adjacent welds is that the residual stresses resulted from each weld will be compiled to exceed the maximum allowable stress in the pipe so by any means you should reduce these residual stresses.

Stress relieving of both welds will be the best solution and you can do that in one PWHT operation.

Regards
Ramin Kondori
Deputy QA/QC Manager
IRAN-LNG Project
NARDIS Energy Co.

On Tue, Mar 6, 2012 at 3:30 PM, murat aksoy <maksoy970@gmail.com> wrote:
Hello my friends,

I have a problem.

Is there minimum distance limitation between two weld joints as per ASME B31.3. or EN

thanks

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Comments

Soji said…
Hi Murat,

Mr. Ramin is correct

.only the issue is the residual stress ...if you do full stress relieving you can do number of joints near to each other ....So do PWHT.....thats all
March 8, 2012 at 12:05 PM
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