API Std 650 SUG II tanks typical joints
To scientifically evaluate the remaining service life of the API Std 650 SUG II tanks, it is necessary to know the thickness change and development trend of the storage tank sheet after long-term use, combined with the metal characteristics of the storage tank, the influence of various external conditions and the continuous change of the oil pressure in the API Std 650 SUG II tanks, etc. factors to judge. Because the metal characteristics, corrosion defects, load and other numerical parameters of the API Std 650 SUG II tanks are randomly changed, the value of the remaining service life of the storage tank will also be dynamic.
Aftershock Level Earthquake (ALE)This design case shall be applicable only when regulations or project documents specifically require the tank system to be designed or evaluated for aftershocks.If the outer tank is not designed as a secondary containment (i.e. it serves as vapor barrier and pressure boundary only and is not constructed of API 620 material suitable for the inner tank API Std 650 SUG II tanks), then no design or evaluation for ALE is required by these provisions for the inner or outer tank.
Oil, Gas, Chemical, Water, and Bio-Fuel storage. Maximum of the most common welded steel tanks used in industry are designed following API 650. Tanks typically found in Refinery API Std 650 SUG II tanks tank farms, Terminals, Pipelines, and other process facilities use these tanks.
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