Re: [MW:5761] multiprocess qualification(SAW+SMAW)

Hii,

 

Please check ASME Sec IX ,process is esential variable for PQR or not?If it is essential you have to make new PQR for SMAW + SAW in place of GMAW+SAW

 

I think thickness also taking some serious consideration.

 

Suresh

 

On 6/27/10, krishna <wiqw@rediffmail.com> wrote:

Frnds,
Here our job is welding of spiral pipes by GMAW + SAW.
Root is continuos tack welded by GMAW & ID & OD WELDED BY SAW.For this we have separate WPS & PQR.

In spiral pipe we have coil joints weld(skelp joints)for that we are doing root & ID welding by SAW but OD welded by SMAW.For this we don't have separate WPS & PQR.Instead we have only SMAW wps/pqr.I mean no multiprocess WPS/PQR.

Now my question is DO we need to qualify a separate PQR for this coil joint(skelp joint welding)i.e SAW + SMAW.

OR is it possible TO prepare a separate WPS taking the support of GMAW + SAW PQR & also SMAW PQR?

Pls tell all your opinion in respect to ASME SEC IX.

THANKS,
KK

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Thanks  & Best Regards,

Suresh

Mobile No: 91-92 92 905 905

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