Re: [MW:11215] pittings on surface of Shell

Dear Mr Azmi,

      Please see UG-16 c) Mill Undertolerance for plates of ASME Sec VIII Div. I. 

This allows 0.25 mm less thickness; addition to this please refer Corrosion allowance.

 

Regards,

 

Vikas.

On Fri, May 27, 2011 at 2:14 PM, asad azmi <azmiasadayub@gmail.com> wrote:

Dear All,

 

Greetings.

 

Pittings (not more than 0.5 mm in depth) observed on the surface of a shell of a Vessel. pls find photos for your reference.

 

Shell material  is SA 36. thickness 8mm. service fluid - water

 

Code of construction is ASME SEC VIII DIV1

 

After grindings also pittings can be observed on the large surface of the shell.

 

Whether these pittings can be accepted as it is OR further grinding is required.

 

Please Suggest.

 

Thanks and Regards

 

Asad Azmi

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