Please refer QW100.3
On 6/29/09, kataiah@bilfal.com <kataiah@bilfal.com> wrote:
> Dear Mr.Raghuram
>
> If code changes after some years & there is a change in
> essential/supplementary essential variables, the wps will be valid.
>
> regards
>
> P.Kataiah
>
>
> ----- Forwarded by Kataiah/BelleliSA on 29/06/2009 07:44 ص -----
>
>
> "BR" <raghurambathula@gmail.com>
> Sent by: materials-welding@googlegroups.com
> 29/06/2009 07:37 ص
> Please respond to materials-welding
>
> To: "Materials & Welding" <materials-welding@googlegroups.com>
> cc:
> Subject: [MW:2566] Re: lifetime of a qualified WPS
>
>
>
> None, yes its forever as long as it represents your production weld.
> However changes may be made in the nonessential variables of a WPS to
> suit production requirements without requalification provided such
> changes are documented with respect to the essential, nonessential,
> and, when required, supplementary essential variables for each
> process. This may be by amendment to the WPS or by use of a new WPS.
> Changes in essential or supplementary essential (when required)
> variables require requalification of the WPS (new or additional PQRs
> to support the change in essential or
> supplementary essential variables).
>
> On Jun 29, 8:28 am, sandy kumar <sandy001...@gmail.com> wrote:
>> Can anyone tell whats is the validity period of a qualified WPS?
>
>
> >
>
--
----------------------
Hareesh K V
+91-9447625012
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