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Re: [MW:35937] RT/UT before PWHT for P1 material

By Materials & Welding
For NACE service can we do RT/UT before PWHT ?

Regards, Ranajit Chatterjee


From: dvreddy82@gmail.com
Sent: Mon, 29 Dec 2025 13:39:28
To: materials-welding@googlegroups.com
Subject: Re: [MW:35934] RT/UT before PWHT for P1 material
 
Hi,
For H2 service you have to NDT RT/UT after PWHT. Better to do hardens also.
 
 
 
 
 
On Mon, 29 Dec 2025, 10:39 am 'ranajit chatterjee' via Materials & Welding, <materials-welding@googlegroups.com> wrote:
Dear Sirs,

As per ASME B31.3 clause no.341.3.1(a) mentioned P Nos.3,4,5A,5B,5C AND 15 materials examination(RT/UT) shall be performed after completion of heat treatment. But no information for P1 material whether NDT performed before or after PWHT.

Please advise can we perform NDT(RT/UT) before PWHT activity for P1(NACE/H2 service) material or not.


Regards,
Ranajit Chatterjee
9995018265

 

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