Re: [MW:14828] Impact test qualification requirement for WPS/PQR

Dear,
Yes. You can combine if all essential variable are same.

Example:
1 PQR1 20mm thk GTAW+SMAW WITHOUT IMPACT with PWHT.

2 PQR2 6mm thk GTAW WITH IMPACT with PWHT.
Consider essential variable P,F,group,other are same as used in PQR1

You can combined this pqr n make one wps with impact ,pwht range from
5mm to 40mm.


Regards,
Mohd.


On 7/9/12, rahul m <rahulmenator@gmail.com> wrote:
> dear alll,
> can we able to combine two pqr's ,one with impact test and the other
> without impact test?
>
> On Fri, Jul 6, 2012 at 10:49 PM, John Henning <jhenning@deltak.com> wrote:
>
>> Ah, but there is a catch. All essential and supplementary essential
>> variables must be the same. While technically feasible, it is difficult
>> to
>> pull off. If nothing else, heat inputs will usually be vastly different
>> between the thick and the thin coupons. About the only place I see this
>> working is with machine (automatic) GTAW or another machine process. For
>> a
>> manual processes like SMAW it is unlikely that heat input will be the
>> same.
>> ****
>>
>> ** **
>>
>> John A. Henning****
>>
>> Welding & Materials****
>>
>> ** **
>>
>> *From:* materials-welding@googlegroups.com [mailto:
>> materials-welding@googlegroups.com] *On Behalf Of *gogulu kumar
>> *Sent:* Friday, July 06, 2012 1:58 AM
>> *To:* materials-welding@googlegroups.com
>> *Subject:* Re: [MW:14780] Impact test qualification requirement for
>> WPS/PQR****
>>
>> ** **
>>
>> Dear John A. Henning,****
>>
>> ** **
>>
>> With reference to below interpretation, PQR 2 should be acceptable for
>> depositing 21mm thick weld by SMAW process and ****
>>
>> PQR 1 & PQR 2 can support a WPS with notch toughness requirement (at -18
>> deg. C) with base metal thickness range from 10mm to 80mm and weld metal
>> deposited by SMAW process up to 38mm max.****
>>
>> ** **
>>
>> Please correct me if i am wrong.****
>>
>> ** **
>>
>> [image: Inline image 1]****
>>
>> Thanks & Regards****
>>
>> Gogulu Kumar****
>>
>> ** **
>>
>> ** **
>>
>> On Thu, Jul 5, 2012 at 8:30 PM, John Henning <jhenning@deltak.com>
>> wrote:*
>> ***
>>
>> This is incorrect, for PQR 2, QW-451.1 limits the maximum thickness of
>> base metal and weld metal to 2T and 2t, respectively. Therefore, PQR 2
>> is
>> only qualified to a maximum of 20mm base metal thickness and 16mm SMAW
>> weld
>> metal thickness. Since PQR 1 was impact tested at a higher temperature
>> than required it is not applicable to welding on this combination of
>> materials and required MDMT.****
>>
>> ****
>>
>> John A. Henning****
>>
>> Welding & Materials****
>>
>> ****
>>
>> *From:* materials-welding@googlegroups.com [mailto:
>> materials-welding@googlegroups.com] *On Behalf Of *gogulu kumar
>> *Sent:* Wednesday, July 04, 2012 12:11 PM
>> *To:* materials-welding@googlegroups.com
>> *Subject:* Re: [MW:14764] Impact test qualification requirement for
>> WPS/PQR****
>>
>> ****
>>
>> Dear Asad Azmi,****
>>
>> ****
>>
>> PQR 2 can be used to deposit 21mm thick weld if other essential
>> and supplementary essential variables are same as PQR 1, since "T limits
>> impact" (QW-403.6) has limitation only on min. thickness qualified.****
>>
>> ****
>>
>> Regards****
>>
>> Gogulu Kumar ****
>>
>> ****
>>
>> On Wed, Mar 14, 2012 at 4:01 PM, asad azmi <azmiasadayub@gmail.com>
>> wrote:
>> ****
>>
>> Dear All,****
>>
>> ****
>>
>> Greetings.****
>>
>> ****
>>
>> A vessel is being fabricated as per ASME SEC VIII DIV 1.****
>>
>> ****
>>
>> Vessel material is SA 387 GR 12 CL2, 65 THK. MDMT is -18 DEG
>> CELCIUS.***
>> *
>>
>> ****
>>
>> Approved WPS is supported by 2 PQR detailed as below --****
>>
>> ****
>>
>> *PQR 1*****
>>
>> ****
>>
>> Test coupon thickness - 40 mm , ****
>>
>> Welding process used - GTAW + SMAW + SAW ,****
>>
>> Weld deposit by SMAW Process is 19 mm.****
>>
>> Weld deposited by SMAW is impact tested at 0 deg celcius.****
>>
>> ****
>>
>> *PQR 2*****
>>
>> ****
>>
>> Test coupon thickness - 10 mm , ****
>>
>> Welding process used - GTAW + SMAW ,****
>>
>> Weld deposit by SMAW Process is 8 mm.****
>>
>> Weld deposited by SMAW is impact tested at - 18 deg celcius.****
>>
>> ****
>>
>> *Whether PQR 2 can be used for SMAW Process to deposit 21 mm weld in
>> a weld groove of 65 mm in depth .( for closing seam of shell to dished
>> head
>> & nozzle to dished head weld seam)*****
>>
>> ****
>>
>> Please advice. please give ASME SEC IX Reference.****
>>
>> ****
>>
>> Thanks & Regards****
>>
>> ****
>>
>> Asad Azmi****
>>
>> ****
>>
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>> ****
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>> -- ****
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>> Regards****
>>
>> Gogulu Kumar****
>>
>> +919765804701****
>>
>> ****
>>
>> ****
>>
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>
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