Nozzle external projection
Nozzle external projection
(OP)
When nozzle is offset from center line for example vessel is 114' ID and 1 1/2 nozzle is offset from center line of vessel 4'-3". If call out in vessel nozzle schedule is 12 3/4" external project, this should be from center line of nozzle, long point of nozzle, or short point of nozzl.
Thank You in advance.
Regard
kdviator
Thank You in advance.
Regard
kdviator





RE: Nozzle external projection
There is no standard. Based on my biases and with no further info, I'd assume the 12¾" projection would be from the "work point" at the intersection of the centerline of the nozzle and the ID of the vessel. I'd prefer to see the dimension called out as a distance from the centerline of the vessel to the face of flange.
jt
RE: Nozzle external projection
I'm not a vessel man but I do use those drawings almost daily.
Nozzle projection from the vessel centerline is the norm for a number of reasons, including the possible confusion you describe.
NozzleTwister
Houston, Texas
RE: Nozzle external projection
If there is a difficult nozzle location just make sure your have a shop workable reference.
RE: Nozzle external projection
Brian
RE: Nozzle external projection
RE: Nozzle external projection
I love this group, very useful tool.