If it is P No. 1 to P No.6, then
Pls refer QW-407.1 (a) (2)
I think you need not require another wps as you have already conducted
one PQR with PWHT job below the lower transformation temperature.
You should only check for your job material's lower tranformation temp
by mettalugy point.
If 670 deg C is beyond lower tranformation temp for existing material
then only new WPS is required.
Also take other's advice. This is my opinion only.
On 9/24/11, Vijay Katkar <katkar.vijay22@gmail.com> wrote:
> Dear All,
>
> Regarding heat treatment ,
>
> I have P1 to P8 PQR with following heat treatment,
>
>
>
> Loading temperature :- 350 * ̊C*
>
> heating rate : 70* * *̊C** /hr *
>
> Socking temperature: 620 *̊C*
>
> Cooling rate : 70 *̊C/hr*
>
> Unloading temperature: 350 *̊C*
>
>
>
> our job requirement is
>
> Loading temperature :- 350 *̊C*
>
> heating rate : 70 *̊C/hr*
>
> Socking temperature: 670 *̊C*
>
> Cooling rate : 70 *̊C/hr*
>
> Unloading temperature: 350 *̊C*
>
>
>
> Is it possible to use above PQR for same job if yes please tell me
> the reference in section IX. or this not possible then why because above all
> temperature below lower critical temperature..
>
> please advice your valuable experience..............
>
> --
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--
Thanks & Regards
Hiren Sevak
Surveyor
Bureau Veritas - Ahmedabad
207, Abhishree
Opp Star India Bazaar,
Satellite Road,
Ahmedabad-380015
Tel No. 079-26925491/92
--
To post to this group, send email to materials-welding@googlegroups.com
To unsubscribe from this group, send email to materials-welding+unsubscribe@googlegroups.com
For more options, visit this group's bolg at http://materials-welding.blogspot.com/
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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