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BS500 Code and P460NL1 steel plate

BS500 Code and P460NL1 steel plate

BS500 Code and P460NL1 steel plate

(OP)
Hi,
I want to know if a pressure vessel manufactured by BS5500 code (or BS EN 13445-3:2002) using P460NL1 steel plate need a post-weld heat treatment.
Can anybody help me about this?.
This is a normalised steel, and I have this code, but I can't find anything in it explaining about this requirement.
Thank you in advance

Mario Valenti
Argentina     

RE: BS500 Code and P460NL1 steel plate

According to table 10.1.1 in EN 13445-4 , PWHT is required for wallthickness over 35 mm. There could of course be  reasons to perform PWHT below 35 mm . e.g. due to low temperature service or sour service.

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