I have compared Add. 2006 & Ed. 2007 and found that In PART-3 material requirements, for ferrous materials UT becomes necessary for plates greater or equal to 50 mm nominal thickness while it was 100 mm in previous add. 2006...

Can you tell me what is the base to change this ? why?
i know UT becomes stringent but why to set limit 50 mm why not less than that....?

or what is the min. design thickness lower limit in VIII-2 ?

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Paresh Gujarati
M.TECH (Industrial Process Equipment Design)

Calculations are more sophisticated and NDE more stringent, it is a consequence.
Mauro

thanks for the answer... but i want to find out what is the base for it?
Is there any reference material related to it?
any resources related to ED. 2007 ? please share.... i m doing academic project work related to new edition...
thanks ........

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Paresh Gujarati
M.TECH (Industrial Process Equipment Design)

The reason behind is a a Committee decision.

DK