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CORAL
Active Contributor

Join Date: Feb 2011
Posts: 16

Impact Testing Requirements

07/14/2012 11:09 PM

Hi Everyone,

I have a question regarding impact testing requirement in Fig. 323. 2.2b of ASME B31.3.

I do not exactly understand about minimum pipe wall thickeness mentioned in General Notes: (a).

Specifically speaking, to calculate the minimum pipe wall thickness I wonder if both mill tolerance and allowances are substracted from nominal pipe wall thickness or allowances only.

I would really appreciate replying from any of you experienced.

Thanks
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ramverma16
Active Contributor

Join Date: Jul 2012
Location: Mumbai
Posts: 10
#1

Re: Impact Testing Requirements

07/16/2012 2:59 AM

I think the minimum wall thickness is equal to the nominal wall thickness minus tolerance. Allowance may include corrosion allowance.
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ronclarke
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Join Date: Nov 2010
Posts: 507
Good Answers: 3
#2

Re: Impact Testing Requirements

07/16/2012 1:55 PM

That would be called stacking tolerances, that is not allowed.

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