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ASME B31.3 - 341.4.3 Severe Cyclic Conditions

ASME B31.3 - 341.4.3 Severe Cyclic Conditions

ASME B31.3 - 341.4.3 Severe Cyclic Conditions

(OP)


341.4.3 (c) "In-process examination in accordance with para. 344.7, supplemented by appropriate nondestructive examination, may be substituted for the examination required in (b) above on a weld-for-weld basis if specified in the engineering design or specifically authorized by the Inspector"

"May be substituted"
So, I can change item b (other examinations) to In-process Examination supplemented by NDT?
If authorized (...)

Weld-for-weld basis, what it means?

My English is not so good, sorry!

Thanks!
 

RE: ASME B31.3 - 341.4.3 Severe Cyclic Conditions

My take is that "weld for weld" means you cannot write your procedure to use 341.4.3.c on all welds -- you have to make a decision based on the particular weld.  I further read it to mean that the design engineer or the authorized inspector needs to agree with changing to In Process examination with appropriate NDE for a particular weld.

 

Patricia Lougheed

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