Re: [MW:8336] PWHT and RT

Dear Sagar,
As ASME/ANSI B31.3 2007 Edition,Thickness greater than 20mm only PWHT required.NDT before or after PWHT depends upon your project specificaiton. ASME B31.3 silent on ndt before or after pwht for P1 materials.

General good industrial practice is NDT after PWHT prefered.

On Mon, Nov 15, 2010 at 11:50 AM, Sagar QC <sagarqcwelding80@gmail.com> wrote:

Hi,

I have a doubt regarding PWHT and RT. We are welding P1 Material Pipes which has thickness more than 19mm so we are performing PWHT for the same. But my question is regarding when to take RT? Can we accept the joints which is radiographed before PWHT and  MPI after PWHT. Or will we have to perform the RT only after PWHT of the joints? Please advice me regarding this and provide the supporting clause.

Thanks and Regards,

Sagar.

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With Warm regards,

G.Padmanabhan
+96895685853

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