Monday, September 26, 2011

[MW:12535] Re: surface imperfections observed on Shell Surface of a Pressure Vessel

Dear Mr. Azad,

These are Markes generated during Rolling in Mill, Either Roller
embeded with scale or the Mill Scale rolled along with the plate
during rolling. Acceptance for these type of discontinuites depends
upon your Inspector/Client Code is not descrbing for sucg kind of
discontinuities.

Regards

Israr Ahmed

On Sep 25, 3:08 pm, asad azmi <azmiasada...@gmail.com> wrote:
> Dear All,
>
> Greetings.
>
> A vessel is being fabricated as per ASME SEC VIII DIV 1.
>
> Surface imperfections( NOT Pittings)  were observed on the surface of the
> shell of the Vessel. please refer attached photos.
>
> The shell material is SA 516 GR 70, 17 mm Thk.
>
> *Plaese inform me what will be the effect of these imperfections on shell in
> terms of Corrosion.*
>
> *Do these imperfections required Grinding OR can be left as it is.*
>
> Thanks & Regards
>
> Asad Azmi
>
>  2009201116683.jpg
> 549KViewDownload
>
>  2009201116679.jpg
> 1357KViewDownload
>
>  2009201116682.jpg
> 1568KViewDownload

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