[MW:7981] Re: Qualification of PQR & PWHT for Carbon Steel Surfacing on Alloy Steel

Dear Sir,

Any reference for the same in the code. Because UCL-34 is for
corrosion resistance overlay only.

Regards

Jaspal Singh

On Nov 1, 10:56 am, Prakash Hegde <pb.he...@yahoo.com> wrote:
> Dear jaspal
> It will be considered as weld metal thk and we can consider as weld built  up
> and accordingly the soaking time can be decided
>
> Regards
>
> Hegde
>
> ________________________________
> From: JASPAL SINGH <jaspaldh...@gmail.com>
> To: Materials & Welding <materials-welding@googlegroups.com>
> Sent: Mon, 1 November, 2010 9:46:25 AM
> Subject: [MW:7978] Qualification of PQR & PWHT for Carbon Steel Surfacing on
> Alloy Steel
>
> Dear All,
>
> As per Client Requirement, we need to do the 10mm Carbon Steel Deposit
> on 250mm Thick Alloy Steel Tube Sheet( 1.25Cr, 0.5Mo).
> What will be the PWHT requirement for deposit.
> If we consider the exemption in UCL-34 (Soaking Time as per deposit
> thickness), that is applicable for Corrosion Resistance Weld Overlay.
> Carbon Steel over Alloy Steel is not Corrosion Resistance Overlay.
> How to Qualify Procedure for the same or we can use butt welded
> qualified PQR.
> The main issue is PWHT time?
>
> Regards
>
> Jaspal Singh, CWI-AWS, CSWIP-3.1
> Quality Assurance
> Process Equipment Division
> ISGEC, Yamuna Nagar, Haryana -135001
> Phone: 911732307251
> Ext: 251 Mb: +91 9996624244
>
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