Re: [MW:31855] PWHT Requirement for Supports?

Just revise the WPS to include higher Preheat without qualifying the PQR.

Thanks & Regards

J.Gerald Jayakumar

On Wednesday, 16 December, 2020, 01:15:42 pm IST, bilal wahla <bilalwahla047@gmail.com> wrote:

Dear

can you please provide me with a reference.

And preheat is not mentioned in WPS.

On Wed, Dec 16, 2020 at 10:21 AM 'james gerald' via Materials & Welding <materials-welding@googlegroups.com> wrote:

Preheat to 95degC prior to welding and use multilayers to avoid PWHT for P-1 material.

Only decrease in preheat temperature greater than 55degC is an essential variable as per ASME Sec.IX and hence revise the WPS to indicate preheat min 95degC without any need for qualifying PQR and perform welding.

Thanks & Regards

J.Gerald Jayakumar

On Wednesday, 16 December, 2020, 12:38:04 pm IST, bilal wahla <bilalwahla047@gmail.com> wrote:

Dear J.Gerald  ,

Material is P-1.

On Wed, Dec 16, 2020 at 9:44 AM 'james gerald' via Materials & Welding <materials-welding@googlegroups.com> wrote:

Generally the Pressure containing Pipe Thickness is taken as the Governing thickness when welding non-pressure part support.

But in the latest version of code there are some exceptions for some P-No's and if you could be specific it will be clear.

Thanks & Regards

J.Gerald Jayakumar

On Wednesday, 16 December, 2020, 12:04:22 pm IST, bilal wahla <bilalwahla047@gmail.com> wrote:

Greeting ALL,

On my project we are doing PWHT on Thickness basis, Pipe thickness is 30.18mm

,Will we do PWHT of Welded Supports as per B31.3? 

Bilal Arshad 

P.W.H.T QCI 

Mobile: +966 580181061

Email: bilalwahla.047@gmail.com

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Respected Sir,

Please find the enclosed file.

Bilal Arshad Wahla

P.W.H.T QCI 

Mobile: +966 580181061

Email: bilalwahla.047@gmail.com

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Respected Sir,

Please find the enclosed file.

Bilal Arshad Wahla

P.W.H.T QCI 

Mobile: +966 580181061

Email: bilalwahla.047@gmail.com

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