Is the fire-fighting water volume for the ethylene tank farm calculated in this way?

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As the title suggests, there is an ethylene plant, and the largest tank group within its tank farm consists of 4 ethylene spherical tanks with a capacity of 2000 cubic meters each. According to the fire protection regulations for petrochemical facilities, the amount of water required for firefighting in areas containing flammable liquid tanks should be calculated based on the tank group that requires the most water during a fire. This amount includes the water needed to prepare foam mixtures, as well as the water required to cool the tanks that are on fire and those located nearby. Since this tank cluster belongs to a liquefied hydrocarbon tank cluster, should the fire-fighting water volume be calculated as follows: 1. Cooling water volume for the tank on fire (fixed type): 2000 cubic meters, with a surface area of 764.15 m2 and a diameter of 7.8 meters. The cooling water supply rate for the ignited tank should be no less than 9 L/min·m2; the calculated value is: 764.15 × 9/1000 × 60 = 412.6 m3/h. Second, regarding the cooling water volume for adjacent tanks (fixed-type): the standard specifies 1.5 times the diameter of the tank, meaning the number of adjacent tanks within a radius of 11.7 meters; if there are more than 3 such adjacent tanks, they are counted as 3. Let’s take 3 for now. The cooling water supply rate is also 9 L/min·m2; taking half of this value gives: 764.15/2 × 3 × 9/1000 × 60 = 618.96. Thus, the amount of cooling water required is: 618.96 + 412.6 = 1031.5 m3. III. Amount of cooling water for mobile units: According to the regulations, the amount of water required for mobile fire cooling systems should be determined based on the water demand of the largest storage tank in the tank farm, and it must comply with the following requirements: When the volume of the storage tank is less than 400 m3, the water flow rate should not be less than 30 L/s; when the volume is 400 m3 or more but less than 1000 m3, the water flow rate should not be less than 45 L/s ； When it is greater than or equal to 1000 m3, it should not be less than 80 L/s ； That is, 80 L/S, which equals 288 m3/h. IV. Foam liquid: In accordance with the specifications for foam fire extinguishing systems, a fixed-type foam fire extinguishing liquid is used, with a supply rate of 5 L/min·m2; the area referred to here is the cross-sectional area, that is, the surface area 764.15X5/1000X60=229 m3/h. Adding these values together gives 1031.5+288+229=1548 m3/h. I’ve written so many words; it seems like I’m taking another registration exam for chemical engineering. Is this correct?