API Std 650 aluminum tanks thickness
The API Std 650 aluminum tanks external floating roof tank of API 650 tank has many advantages, and its application range is more and more wide. It is a kind of storage tank with a bright future. The well-designed internal floating roof tank of API 650 tank is the best and least investment method to control evaporation loss of API Std 650 aluminum tanks Fixed roof tank.
The most popular standards for API Std 650 aluminum tanks are API Std 650, JIS B8501, BS2654, GB50341, etc. The formulas used in each standard are derived from the hoop stress calculation formula of membrane theory. Combined with the stress characteristics of API Std 650 aluminum tanks, plus the allowable stress, weld coefficient and additional wall thickness, the wall thickness calculation formula is complete. The allowable stress and weld coefficient are determined according to the material performance characteristics and construction technology level of each country. According to different API Std 650 aluminum tanks standards, the calculation results of tank wall thickness are sometimes quite different.
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 aluminum tanks), then no design or evaluation for ALE is required by these provisions for the inner or outer tank.
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Japan is a typical shipping first, and its raw materials are imported from Oceania, central and South America and other Asian countries. Most of the API Std 650 aluminum tanks steel produced is exported to China and other Asian countries, and a small amount is exported to America. Shipping is the main way of its API Std 650 aluminum tanks steel international transportation. According to the data, steel goods account for about 20% of the total sea freight in Japan. The domestic transportation of Japanese steel is mainly truck.
