Dear Mr Kamalaksh,
As clarified by Mr Naskar (see below), addition or deletion of PWHT is an essential variable. Hence the the PQR qualified with PWHT would not support a WPS without PWHT.
For faster qualification , you may choose and weld a longer coupon plate, typically twice the dimension specified in ASME Sec-IX,use one half for qualification with PWHT and the other without PWHT. While you qualify the PQR with PWHT, doing the same with maximum soaking time would be advantageous, for any weld repair /re SR etc.
Thanks
Pradip Goswami,P.Eng
Welding & Metallurgical Engineer/Specialist
Ontario Power Generation Inc.
Date: Thu, 4 Mar 2010 11:35:25 +0800
Subject: Re: [MW:4415] WPS
From: sukamalbecmet@gmail.com
To: materials-welding@googlegroups.com
NO.. Refer QW-407.1 , change in PWHT conditions is an essential variable.
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As clarified by Mr Naskar (see below), addition or deletion of PWHT is an essential variable. Hence the the PQR qualified with PWHT would not support a WPS without PWHT.
For faster qualification , you may choose and weld a longer coupon plate, typically twice the dimension specified in ASME Sec-IX,use one half for qualification with PWHT and the other without PWHT. While you qualify the PQR with PWHT, doing the same with maximum soaking time would be advantageous, for any weld repair /re SR etc.
Thanks
Pradip Goswami,P.Eng
Welding & Metallurgical Engineer/Specialist
Ontario Power Generation Inc.
Date: Thu, 4 Mar 2010 11:35:25 +0800
Subject: Re: [MW:4415] WPS
From: sukamalbecmet@gmail.com
To: materials-welding@googlegroups.com
NO.. Refer QW-407.1 , change in PWHT conditions is an essential variable.
Regards,
--
Sukamal
On Thu, Mar 4, 2010 at 11:30 AM, Kamalaksha, Arekere <arekere.kamalaksha@gl-group.com> wrote:
Dear all ,
If we qualify the welding procedure for the P1 materials with post weld heat treatment then whether it is applicable for the welding without post weld heat treatment ,
Please note that here thickness is not the criteria .Post weld heat treatment is required for some of the process line in Refinery.
Please clarify.
Kamalaksh. A
GLIS GmbH -India
Mobile: +919741506305
Email : kare@gl-group.com
Website: www.gl-group.com
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The views expressed/exchnaged in this group are members personel views and meant for educational purposes only, Users must take their own decisions w.r.t. applicable code/standard/contract documents.
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Sukamal
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The views expressed/exchnaged in this group are members personel views and meant for educational purposes only, Users must take their own decisions w.r.t. applicable code/standard/contract documents.
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