[MW:14648] RE: 14646] Impact WPS P1G1 to P1G1 &P1G2 to P1G2 Qualified P1G1 to P1G2 with impact ?

The basic assumption is that you are qualifying in accordance with ASME Section IX.

Then, when impacts are required, supplementary essential variable 403.5 applies:

Q1. Is answered by the portion of QW-403.5 in the following section:
"For ferrous materials in QW/QB-422 a procedure qualification shall be made for each P-Number Group-Number combination of base metals, even though procedure qualification tests have been made for each of the two base metals welded to itself."

There is an exception provided in the next sentence:
"If, however, two or more qualification records have the same essential and supplementary essential variables, except that the base metals are assigned to different Group-Numbers with in the same P-Number, then the combination of base metals is also qualified."
I have found this to be a difficult requirement to satisfy.

Q2. Is answered in the subsequent sentence of QW-403.5:
"In addition, when base metals of two different P-Number Group-Number combinations are qualified using a single test coupon, that coupon qualifies the welding of those two P-Number Group-Numbers to themselves as well as to each other using the variables qualified."

Therefore . . . Q1 is NO, and Q2(a) is YES, Q2(b) is YES.

John A. Henning
Welding & Materials

-----Original Message-----
From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of mohd
Sent: Friday, June 22, 2012 3:40 AM
To: Materials & Welding
Subject: [MW:14646] Impact WPS P1G1 to P1G1 &P1G2 to P1G2 Qualified P1G1 to P1G2 with impact ?

Dear experts,

Dear Expert,

1)Two PQR P1 G1 to P1 G1 & P1 G2 to P1 G2 with imapct, Qualified

WPS With Impact P1G1 to P1G2 Ans : Yes Or NO.

2) PQR P1G1 to P1G2 with Impact,Qualified Following WPS,

a) P1G1 to P1G1 with Imapact Ans Yes Or NO
b) P1G2 to P1G2 with Impact Ans Yes or No.

I thinks these answer more clarified Mr lalit Querry.

Thanks,
Mohd.


On Jun 21, 9:47 am, LALIT VADADORIYA <lalit.vadador...@gmail.com>
wrote:
> Dear expert,
>
> If welding procedure is qualified for the SA 516 Gr.60 to same (P No.1
> Group 1 to same), then is it required to conduct another PQR for the
> SA 516
> Gr.70 to same (P No.1 Group 2 to same), if impact requirement is
> applicable for both material at same temperature?
>
> --
> Regards
>
> *Lalit Vadadoriya
> Sr.Engineer (Inspection)
> Engineers India Limited*
> *Dahej Petrochemical Complex,*
> *Dahej (Gujarat)*

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