Requirement for WPS -PQR for Tack Welding.

[Shivprasad Yadav]

I have an existing WPS-PQR of SMAW process with impact testing requirement. Since the PQR was done with a 38mm plate the base metal thickness qualified is from 16 to 200mm when impact testing is required. For the same job where I have to do Tack welds for the fit-ups will this WPS-PQR suffice for the tack welds? or a separate WPS-PQR will be required?

[james gerald]

For Tack welds hope base metal thickness remains the same and there is no lower limit on weld metal qualified.

Thanks & Regards

J.Gerald Jayakumar

On Tuesday, 8 February, 2022, 03:30:20 pm GMT+4, Shivprasad Yadav <shivpr...@gmail.com> wrote:

I have an existing WPS-PQR of SMAW process with impact testing requirement. Since the PQR was done with a 38mm plate the base metal thickness qualified is from 16 to 200mm when impact testing is required. For the same job where I have to do Tack welds for the fit-ups will this WPS-PQR suffice for the tack welds? or a separate WPS-PQR will be required?

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[Mohd Siraj]

if tack weld is merged with welding no new WPS is needed.

if tack weld is removed from base metal, then yes need new WPS to support your tack weld thickness. or else can use GTAW WPS( if u have).

[Prasad rao]

Could please tell me about tack weld specficatio please

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[james gerald]

check B31.3

Thanks & Regards

J.Gerald Jayakumar

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[Prasad Talari]

Hi,

your existing WPS will suffice the requirement for tack welds, separate WPS does not required

Regards

Prasad Talari

Welding Engineer

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[Vishwas Keskar]

WHAT IS YOUR JOB THICKNESS ?

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