Section VIII & IX

[82253]

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.

 

[weldtek]

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.

 

[82253]

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?