ASME BPVC Sec. VIII Div. 1 UG-36(C)(3)(-C)
ASME BPVC Sec. VIII Div. 1 UG-36(C)(3)(-C)
(OP)
Hello All,
My question is if you have two small nozzles (let’s just say the finished diameter is 2”) in a pressure vessel with a thin shell thickness (let’s say 0.25”) and they are relatively close together. Do you need do preform a calculation to determine if their centers are further away from each other by at least the sum of their diameters?
To restate, if you have nozzles that meets UG-36(C)(3)(-a)(-1) and are exempt from reinforcement calculations, do you still need to do center distance calculations per UG-36(C)(3)(-C)? or are they exempt from those as well?
As always thank you for your input,
Tyler
My question is if you have two small nozzles (let’s just say the finished diameter is 2”) in a pressure vessel with a thin shell thickness (let’s say 0.25”) and they are relatively close together. Do you need do preform a calculation to determine if their centers are further away from each other by at least the sum of their diameters?
To restate, if you have nozzles that meets UG-36(C)(3)(-a)(-1) and are exempt from reinforcement calculations, do you still need to do center distance calculations per UG-36(C)(3)(-C)? or are they exempt from those as well?
As always thank you for your input,
Tyler





RE: ASME BPVC Sec. VIII Div. 1 UG-36(C)(3)(-C)
Regards,
Mike
The problem with sloppy work is that the supply FAR EXCEEDS the demand
RE: ASME BPVC Sec. VIII Div. 1 UG-36(C)(3)(-C)
So as per UG-36(c)(3) all conditions (-a), (-b), (-c), and (-d) must be met [If they apply] to exclude that opening from a reinforcement calculation?
In my example above I can exclude UG-36(c)(3)(-b,-d) because it's not a threaded, studded, or expanded connection nor more than two openings. But I have to meet requirements UG-36(c)(3)(-a,-c) because it is welded and there is two openings close to each other. Is this correct?
RE: ASME BPVC Sec. VIII Div. 1 UG-36(C)(3)(-C)
Regards,
Mike
The problem with sloppy work is that the supply FAR EXCEEDS the demand
RE: ASME BPVC Sec. VIII Div. 1 UG-36(C)(3)(-C)
General Blr. CA,USA