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Section VIII & IX

Section VIII & IX

Section VIII & IX

(OP)
On Carbon Steel vessel which requires Charpy Impacts per Code, what is governing thickness on Category D joint for your welding procedure? Your nozzle is 2" Sch. 80 and  shell is 1.25" thick.

RE: Section VIII & IX

Your question doesn't conatin enough info.  If the nozzle is not exempt from impact requirements you'd need a procedure qualified from .218" thru 1.25".   Recall that cat D's don't require production impacts though.

RE: Section VIII & IX

(OP)
The pipe is SA-333 Gr 6 which is exempt and shell is SA-516-70 Norm which is exempt. Category "D" is exempt from production impacts I agree. Should the procedure you are using be qualified for .218 (.1875-.375) or .75 (.75-1.5)range?

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