Understanding the relevant provisions of GB50016?
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To prevent the spread of fire during a blaze, facilitate firefighting, and reduce losses, the storage tanks within a group should not be arranged in more than two rows. The distance between storage tanks within a group is primarily determined by the requirements for installation and maintenance. The distance between tank groups can be determined based on the type of tanks (above-ground, semi-underground, underground, etc.) and the standard capacity per tank for tanks with the same total storage capacity. For example, if a group contains storage capacity for Class A and Class B liquids totaling 950 m3, with 2 tanks of 100 m3 each and 5 tanks of 150 m3 each, then the fire separation distance between groups is determined as 0.75D for tanks with a capacity of less than or equal to 1000 m3. How is D determined? If the height is different, then D will be different as well. Is there a standard for tanks with a volume of 1000 m3, meaning that there is only one possible dimension for them?
Single tanks generally come in standard sizes: for 1000 m^3 storage tanks, the fixed-roof type has dimensions of φ11500 X10650 (wall height), while the internal floating-roof type has dimensions of φ11500 X12000 (wall height). Refer to Page 253 of the second volume of the Chemical Process Design Manual! This size is based on experience and practice; using such a radius-to-height ratio yields the best results! If it is not this size in the design, it is generally considered a non-standard container!
Volume 1 of the \"Design Manual for Oil Storage and Transportation\" provides reference tables for tank dimensions; the value of D varies depending on the height, but designing according to these tables helps save materials.