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Re: [MW:5310] Re: DP test Requirement in Overlay PQR.

By Materials & Welding
Irrespective of  yr PQR, code req etc Penetrant testing (PT) has a meaning and purpose if it is done after SR and final machining.
This does not preclude testing at different stages of manufacture (i.e)
interstage ,PT after complete welding and machining prior to HT.

Regds
MSR

On Sun, May 30, 2010 at 8:53 PM, sandeep p <sandeep1dxb@gmail.com> wrote:
Dear Rao,
No doubts about the client requirement,b'coz always NDT can done after
PWHT.


Thanks,


Sandeep.k.p

On May 29, 2:12 pm, "PAMULA " <vasantharao2...@rediffmail.com> wrote:
> Dear All,
>
> I have conducted Overlay PQR qulification (316L OVERLAY ON SA516 Gr.70N) as per ASME Sec IX.
>
> As per ASME SEC IX QW-453, note 4, 5, 9, we have conducted
>
> 1. DP test after every layer(total 3layers) in as-welded condition.
> 2. 4-Side bend tests in PWHT condition.  
> 3. Chemical analysis from overlay specimen in as-welded condition.
>
> Job requirement:
> 316L weld overlay on SA516 Gr.70, vessel will under PWHT at 620 Deg.C.
> ASME Div.1 Cladded Vessel.
>
> Client Comments on PQR.
>
> client is demanding us to provide DP report After PWHT of the overlay.
>
> Client says PWHT is essential variable,  DP test & bend tests should be conducted after PWHT.
>
> Query.
>
> Is it Code (Sec.IX or Div.1 ) requirement to conduct DP test after PWHT ?.
>
> If it is code requirement, pl. provide the reference from code.
>
> if any code interpretations available, pl. provide the same.
>
> regards
>
> P.Rao.

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