Dear Mr. Shashank
I think my is question is not very clear. let me elaborate my question.
As per below attached mail from members , WPS is valid forever as long as it represent the production weld.
Suppose Sec.IX changes after some years ( Exaple : Thickness limits for base metal qualified in table QW 451 is changed from 2004 Edition to 2007 Edition), the WPS conforming to sec.IX 2004 edition or earlier editions is valid for 2007 code jobs?.
Suppose there may be some changes in essential variables from old editions to new editions, the old WPS not confirming to latest Sec. IX requirement is valid document for new jobs?
I feel WPS is valid document only when it meets the latest Sec.IX requirement (no changes in essential & supplementry essential variables).
PQR may be valid forever.
regards
P.K
| "Shashank Vagal" <nach_sam@yahoo.com> Sent by: materials-welding@googlegroups.com 04/07/2009 12:31 م | To: <materials-welding@googlegroups.com> cc: Subject: [MW:2622] Re: Fw: [MW:2566] Re: lifetime of a qualified WPS |
| Mr Kataiah, Is something not correct here? Shashank Vagal --- On Mon, 29/6/09, kataiah@bilfal.com <kataiah@bilfal.com> wrote: From: kataiah@bilfal.com <kataiah@bilfal.com> Subject: [MW:2569] Fw: [MW:2566] Re: lifetime of a qualified WPS To: "Materials & Welding" <materials-welding@googlegroups.com> Date: Monday, 29 June, 2009, 10:33 AM 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 -----
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? |
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