Roof Nozzle weld details for API 650 Storage Tank
Roof Nozzle weld details for API 650 Storage Tank
(OP)
Dear All,
As per API 650, Figure 5.19. Roof nozzle neck to RF pad (6mm weld) & RF pad to roof Plate(5mm weld)is required. So my question is wheather we have to provide the welding for under side of roof plate to nozzle neck also?
Thanks in Advance
As per API 650, Figure 5.19. Roof nozzle neck to RF pad (6mm weld) & RF pad to roof Plate(5mm weld)is required. So my question is wheather we have to provide the welding for under side of roof plate to nozzle neck also?
Thanks in Advance





RE: Roof Nozzle weld details for API 650 Storage Tank
Roof nozzles are not on the pressure boundary and are assumed to have reasonably small loads from piping or equipment.
If you have reason to doubt the strength of the roof plate or roof supporting structure, it is time to examine them for strength and serviceability.
RE: Roof Nozzle weld details for API 650 Storage Tank
The same applies to 653 where sometimes you will find an inspector asking for a full-seal at the neck-to-roof joint out of crevice corrosion scares.
RE: Roof Nozzle weld details for API 650 Storage Tank
RE: Roof Nozzle weld details for API 650 Storage Tank