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Re: [MW:27125] Qualifications of welders

By Materials & Welding
Refer attached file of code interpretation for welding procedure qualification related to unassigned material

On Tue, Dec 5, 2017 at 10:40 AM, Hasin Shaikh <hasin.shaikh@gmail.com> wrote:
Dear  Jhon Sir

As per QW 423.1 -unassigned material with similar chemical composition also included, 
in that case no need to go further new performance qualification if unassigned material have similar chemical composition with previous any qualification ,

This is my interpretation, is correct or not please advise.

With Regards
Hasin Shaikh

On Mon, Dec 4, 2017 at 9:22 PM, John Henning <jhenning@deltak.com> wrote:

No welder requalification is not required, provided all other requirements of QW-353 are met, and only Section IX qualification is required..

 

While Table QW-353 states QW-403.18 is an essential variable one has to look further.  QW-403.18 states:

 

 

So one has to look again further at QW-423, Alternate Base Materials for Welder Qualification:  There is no distinction made between P8 and P10H as far base material required is concerned.  In fact the welder could have qualified using P1  base materials for both P8 and P10H base metals.

 

However, customer requirements may restrict qualification. 

 

Clearly, applying the first instance in QW-423.1, performance qualification with P8 material

 

From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of PGoswami
Sent: Monday, December 04, 2017 9:28 AM
To: materials-welding@googlegroups.com
Subject: RE: [MW:27111] Qualifications of welders

 

To All Concerned,

 

A new qualification is required in this case. Qualification on other austenitic stainless steels(P No 8) does not permit the validity of qualification for duplex stainless steels (P No 10H). It's clearly stated under QW-353, please see the extract below.

 

F No for both ASS and DSS are the same, F5 for SMAW (SFA 5.5) and F6 for GTAW/GMAW(SFA 5.9).

 

Thanks.

 

 

 

P.Goswami.P.Eng, IWE.

Welding & Metallurgical Specialist

Linkedin: https://www.linkedin.com/in/pradip-goswami-2999855/

Email:pgoswami@quickclic.net,pradip.goswami@gmail.com

 

 

QW-351 GENERAL

A welder shall be requalified whenever a change is

made in one or more of the essential variables listed for

each welding process

 

 

 

 

From: 'ms viswanathan' via Materials & Welding [mailto:materials-welding@googlegroups.com]
Sent: December 4, 2017 7:23 AM
To: materials-welding@googlegroups.com
Subject: Re: [MW:27109] Qualifications of welders

 

Yes, I agree .Thanks for your guidance.

 

Regards, M.S.Viswanathan

 

On Monday, December 4, 2017 1:46 PM, Kannayeram Gnanapandithan <kgpandithan@gmail.com> wrote:

 

MSV

            pl see QW 416,423.

 A no is at all essential variable for welding performance qualification. Let us not misguide the people. 

 

Virus-free. www.avast.com


THANKS & BEST REGARDS,

KG.PANDITHAN, BE, IWE,  AWS-CWI, CSWIP 3.1,

CONSULTANT-WELDING & QUALITY

Mobile no: +919940739349

 

On Mon, Dec 4, 2017 at 3:51 PM, 'ms viswanathan' via Materials & Welding <materials-welding@googlegroups.com> wrote:

No, because DSS - P number is 10H and A.No-7 and .S.S-   P number is -8 and A.No 8 , essential variables.

 

Regards, M.S.Viswanathan

 

On Monday, December 4, 2017 12:42 PM, foued oudina <oudinafou21@gmail.com> wrote:

 

Dear Colleagues ;

 

 

Could you  please help me, we have welders qualified in SS they can weld DSS.

 

Thanks

 

 

 

 

OUDINA FOUAD | QC Welding OFF PLOT

Técnicas Reunidas Group

TouatGaz Project – EPCC Processing & Production Facilities

Field Engineering Group                   

Oued Zine, Adrar, Algeria

( Ext. 3912

 

 

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*With Regards
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Email: hasin.shaikh@gmail.com
Mobile: +91-9924562942*


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