nozzle bore
nozzle bore
(OP)
In a refinery setting, is it typical for the bore of pressure vessel piping to match the bore of nozzles to which the piping is connected? Nozzle schedule is determined per code based on design conditions and external loads etc. Does piping schedule need to be changed to match the nozzle bore? What does code say about this issue? If nozzle bore is smaller (wall thicker) can you taper it down to pipe bore to match it?
Are there any other considerations on this issue? Like type of flow, type of fluid, pressure, temperature etc.?
Are there any other considerations on this issue? Like type of flow, type of fluid, pressure, temperature etc.?





RE: nozzle bore
RE: nozzle bore
jt
RE: nozzle bore
RE: nozzle bore
jt
RE: nozzle bore
..............A tapered transition having
a length not less than three times the offset between
the adjacent surfaces of abutting sections, as shown in
Fig. UW-9, shall be provided at joints between sections
that differ in thickness by more than one-fourth of the
thickness of the thinner section, or by more than 1?8
in. (3.2 mm), whichever is less..............
for transitions to piping attached to ASME Code Vessels, follow the Code specified for the piping, and for transitions within the scope of the vessel (ASME Sec. VIII), the transition may be formed by any process that will provide a uniform taper and alignment should be that specified in table UW-33. Use good engineering practice for the piping to nozzle connection if not specified in a code and that would suggest a taper bore in my opinion.