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Governing Thickness Preheat ASME B31.3 1

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Jeldon

Jeldon

Chemical
Joined
May 20, 2013
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25
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BR
How do I know what the nominal thickness to be used for preheating of joints type branch connection. Type FIG. 328.5.4D - Sketches(1) (3) and (5).
Thanks to everyone.
 
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Read Requirements in 330.1.1. "the thickness intended is that of the thicker component measured at the joint".
In sketches 3 & 5 you have to check three welds individually.
 
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Dear Camba, thank you for the reply. Then the thickness is considered to be the largest in the joint. Hugs from Brazil
 
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