API 650 open top welded storage tanks butt-weld

The refrigerated tank primary components shall include, but will not be limited to, the following parts of a single-wall tank or of the inner tank API 650 open top welded storage tanks in a double-wall tank: shell plates; bottom plates; knuckle plates; compression rings; and shell manways and nozzles including reinforcement, shell anchors, piping, tubing, forgings, and bolting. Roof nozzles in contact with the refrigerated liquid shall be considered primary components.

In Appendix E to API 650 oil storage tank, the maximum values of inertia force, pulse pressure and convection pressure are superimposed, and tend to be conservative.In GB50341, only pulse pressure is calculated for API 650 open top welded storage tanks tanks below 5000 m.

In the event of continuous heavy rainfall, the inspection of the API 650 open top welded storage tanks farm should be strengthened to monitor and pay close attention to the soil moisture content of the tank farm in order to quickly take emergency measures. Check whether the seals of the oil unloading port and the oil measuring port are in good condition in time to prevent rainwater from leaking into the API 650 open top welded storage tanks from the oil unloading port and the oil measuring port, which will affect the oil quality.