Total volume of a fixed-volume combustible gas storage tank
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Regarding the internal storage tank groups (workshop tanks (groups)) as specified in GB 50160 and GB51283, there are differences in the way the total volume of fixed-volume flammable gas tanks is defined: Table 5.5.2-1 of GB51283 outlines the fire separation distances between workshop tanks (groups) and factory buildings (production facilities) in meters, while Table 5.5.2-2 specifies the fire separation distances for tanks (groups), equipment, and buildings in meters. Note: 4 The total volume of fixed-volume flammable gas tanks should be calculated as the product of the geometric volume of the tank in cubic meters and the design storage pressure (absolute pressure, in 10^5 Pa)； Article 4.3.1 and its explanatory notes of the Code for Fire Protection Design of Buildings (GB50016-2014), as well as Article 6.5.3 and its explanatory notes of the Code for Design of Urban Gas Systems (GB50028-2006), contain similar provisions; regarding liquid oxygen, there is a requirement that 800 cubic meters of gas be equivalent to one cubic meter of liquid oxygen. GB 50160 does not have this note; therefore, is it not necessary to perform pressure correction when using GB 50160?
The GB 50160 and GB 51283 standards mentioned by the original poster do indeed have slight differences in the definition of storage tank groups within a facility. After examining the table numbers you cited, the main difference lies in the fact that GB 51283 takes into account more the impact of the distance between the storage tank groups in the workshop and the building itself, while GB 50160 focuses more on the overall layout of the facility. It is recommended that you directly refer to the calculation rules for \"total volume\" in the two standards (such as whether operating pressure is included and the conversion methods for horizontal and vertical tanks), as well as the examples provided in their respective explanatory texts, as this will make things clearer. Furthermore, the applicable scopes of these two standards are different (GB 50160 applies to the petrochemical industry, while GB 51283 applies to the fine chemical industry). It is recommended to determine the industry to which the project belongs before applying the appropriate standard; if necessary, consult the local drawing review agency or the standard formulation team to avoid misunderstandings.