API 650 Tanks - Minimum Spacing Requirements of Shell Openings
API 650 Tanks - Minimum Spacing Requirements of Shell Openings
(OP)
According to API 650 5.7.1.1 Minimum Dimension Between Weld Toes or Weld Center-lines should be 75 MM. what is the corrective action if this space(75mm from weld center line to other i.e nozzle welds toe)is not maintainable.





RE: API 650 Tanks - Minimum Spacing Requirements of Shell Openings
If it's the spacing around nozzle necks, move one of the nozzles.
In addition to code issues, watch for weld distortion in those cases- when you weld one nozzle, it can move the adjacent nozzle.
RE: API 650 Tanks - Minimum Spacing Requirements of Shell Openings
RE: API 650 Tanks - Minimum Spacing Requirements of Shell Openings
yes this is an existing tank under construction, the space or dimension measured is coming 50 to 60 mm as shown in figure 5.6 dimension B for an individual nozzle without repad (S-N). So what have to do, what is the corrective action.
RE: API 650 Tanks - Minimum Spacing Requirements of Shell Openings
Figure 5.9 detail C is not intended to be for S-N nozzles but I'm not sure I see why it could not be used if you added a repad and did the NDE. What is your shell thickness and grade?
What size are these nozzles? Are the flanges hitting or are these couplings without flanges?
RE: API 650 Tanks - Minimum Spacing Requirements of Shell Openings
NOZZLES SIZE 2". PIPE + FLANGE.
RE: API 650 Tanks - Minimum Spacing Requirements of Shell Openings