As per B31.3, it is not necessary to do the RT for P1 material after PWHT. Regards, P.Mahendran
--- On Mon, 15/11/10, mahendra reddy <mahendra.mog@gmail.com> wrote:
From: mahendra reddy <mahendra.mog@gmail.com>
Subject: Re: [MW:8276] PWHT and RT
To: materials-welding@googlegroups.com
Date: Monday, 15 November, 2010, 11:16 PM
Dear Sager Before is our internal to sure that joint is ok to avoid the 2 times PWHT. After PWHT RT+ mpi is the one which is recordable. if u dont want u can avoid before pwht RT if u r sure that ur welders are perfect there will be no repairs. THX & RGDS
M.M.REDDY
QA/QC INSPECTOR (WELDING / PIPING)
GAS TO LIQUID PROJECT
ESCRAVOS - NIGERIA
+2347054163177 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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