Re: [MW:11957] QW 200.4(b)

Dear Yash,

As your job is having impacts also, Please refer QW403.5 & 403.6 for
minimum Thk limits.

On Tue, Jul 26, 2011 at 9:53 PM, yash yagnik <yash2223@gmail.com> wrote:
> Dear All,
>
> Can anybody give detail interpretation of this clause??
>
> For example I am describing below mentioned problem.
>
> I want to weld 100mm thick plate for use of Heat Exchanger with Impact
> requirement and with the help of multiple processes - Root GTAW followed by
> SMAW and SAW.
>
> I already have three PQR of individual process with GTAW - Thck 10mm , SMAW
> - 25mm thk and SAW - 50mm thk. All are satisfying imapct requirement.
>
>
> NOW Can I use prepare a WPS with supporting of this three PQR?
>
> My Interpretation of this clause is as under:
>
> I can prepare this WPS with the help of this three PQR but my WPS will be
> qualified for thickness of 10mm to 20mm hence I cannot use this WPS for
> intended job.
>
> If I can have PQR of GTAW with plate thickness of 13mm I can use this PQR
> and range will be 13mm to 100mm as root run GTAW  PQR with thickness of 13mm
> or more will qualify for any greater thickness base material root run
> welding.
>
>
> If my interpretation is wrong or any new ideas/views or Observations are
> there from you people i would like to understand it.
>
> Thanks
>
> Yash Yagnik
>
>
>
>
>
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