Re: [MW:24576] Preheating and PWHT for B31.3 CS mtls

As per the attached requirement from B31.3.2014 edition PWHT tequirement .the thickness considered is the lesser of the two parts joining .
Does it means if one of the parent metal is of below 25 mm PWHT not required.?

BINOY L
QC Engineer-Mechanical
AGC.
Project:AFU KKIA Riyadh.KSA
   

On 26 Mar 2016 12:48 pm, "Binoy Lonappan" <binoypl3@gmail.com> wrote:

I have checked this but for PWHT the minimum thickness is not given.

BINOY L
QC Engineer-Mechanical
   

On 24 Mar 2016 7:08 pm, "Lalu Rajendran" <lalucpt@gmail.com> wrote:

Hi,

As per ASME B31.3 Edition2014, there is the exception for PWHT for P1 Carbon steel materials. Please see the below extract.

regards,

LALU

On Wed, Mar 23, 2016 at 8:11 AM, Binoy Lonappan <binoypl3@gmail.com> wrote:

Whats the thickness shall be done with PWHT CS material as per B31.3 latest edition .
Here the joint is  branch weld of high thickness weldolet with low thickness pipe.

BINOY L
QC
   

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