Re: [MW:24931] Re: PWHT and RT

Dear sagar,

First of all According to ASME B31.3 2014 edition PWHT is not required for P1 material for thickness greater than 25mm if you are doing a preheat of 95 degree or multiple layer welds are used when thickness greater than 5mm.

Secondly for your question ; RT should be done compulsarily after PWHT. Normally RT is done both before and after PWHT . RT before PWHT is done to assure the weld joints are defect free before PWHT. 

Regards,

Aby

On Wed, Jun 8, 2016 at 6:14 AM, Subin Das <subinqc@gmail.com> wrote:

Hai sagar,

BSR is Not Necessary, if there is client requirement you have to take BSR otherwise you can pass the joint by taking ASR

On Monday, November 15, 2010 at 10:20:45 AM UTC+4, Sagar QC 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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