Re: [MW:12976] Supplementary essential variable - Group number As per section IX

Dear concern,

 

In this case if you have PQR with P No-1 Gr No-2 to P No1 Gr 1 combination with impact testing.

 

The following combinations with same PQR For impact application. -  CAN NOT BE USED

1) P No-1 Gr No-2 to P No1 Gr 2
2) P No-1 Gr No-1 to P No1 Gr 1
3) P No-1 Gr No-2 to P No1 Gr 1

 

But, as per QW-403.5

 

If you have two W{PS/PQR for P No-1 Gr No-1 to P No1 Gr 1 and P No-1 Gr No-2 to P No1 Gr 1 or 2 combination with impact testing., then only the above combinations are allowed.

 

QW - 403.5 clearlly states that a procedure qual. shall be made for each P No. Gr No combination of base metals, even though pro. qual. tests have been made for each of the two base metals welded to itself. 

 

On Mon, Nov 14, 2011 at 11:18 AM, Sadique Basha <s-basha@velosi.com> wrote:

Dear Vijay,

 

Please refer to QW-403.5 of ASME Sec IX.

 

It states " When base metals of two different P-Number Group Number combinations are qualified using a single test coupon, that coupon qualifies the welding of these two P-Number Group Numbers to themselves as well as to each other using the variables qualified."

 

Hope this helps.

 

Regards,

Sadique

 

From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of Vijay Katkar
Sent: Sunday, November 13, 2011 9:30 PM
To: materials-welding@googlegroups.com; nandeshkumar@rocketmail.com
Subject: Re: [MW:12969] Supplementary essential variable - Group number As per section IX

 

Dear Nandesh,

Thanks for reply

But if toughness requirement is applicable then group number will be essential variable. as per QW 252 change in group number call for qualification.
please give me any reference in the section IX.

Regards

vijay katkar 

On Sun, Nov 13, 2011 at 4:09 PM, Nandesh Kumar <nandeshkumar@rocketmail.com> wrote:

YES. 

As per SEC IX, any combination of P1, G1 materials can be welded in any combination to P2, G2, provided Impact test requirements are fulfilled.

 

Nandesh

 

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From: Madhusudan Rout <madhusudan.rout@gmail.com>
To: materials-welding@googlegroups.com
Sent: Sunday, 13 November 2011 4:37 PM
Subject: Re: [MW:12964] Supplementary essential variable - Group number As per section IX

 

Yes  u can use As per SEC-9. QW-420, base metal grouping, 2010 edition.

 

 

 

On Sat, Nov 12, 2011 at 9:14 PM, Vijay Katkar <katkar.vijay22@gmail.com> wrote:

Dear All,

please sheared your valuable experience for following situation,

I have PQR with P No-1 Gr No-2 to P No1 Gr 1 combination with impact testing. Can i use following combination with same PQR For impact application.

1) P No-1 Gr No-2 to P No1 Gr 2
2) P No-1 Gr No-1 to P No1 Gr 1
3) P No-1 Gr No-2 to P No1 Gr 1

If above combination's are possible please provide code reference of ASME section IX or ASME section VIII.

Regards
Vijay Katkar

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