Question 16, afternoon of Day 1, 2014 Juhua exam
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16. In accordance with the design fire protection codes for petrochemical enterprises, the two existing Class A/B flammable liquid tanks with a capacity of 1100 m3 each are of the floating roof type. Due to limitations in foundation design, their diameter cannot exceed 10 m. What is the fire separation distance required between two adjacent tanks of this type when designing such above-ground storage tanks? A 8.6 B 5.6 C 9.5 D 4 I choose D, right? Please feel free to offer corrections.
You used a diameter of 10 meters and a spacing of 0.4D, right? But according to Note 1 in the petrochemical regulations, D refers to the diameter of the larger adjacent tank; for storage tanks with a volume greater than 1000 cubic meters, the larger value between the diameter and height is to be used. In this way, H comes out to be 14 meters, with a spacing of 5.6. I’m not sure if that’s correct; I hope some expert can confirm it again.
I’m sorry. How to find the height?
Based on a volume of 1100 m3 and a diameter of 10 m, the height can be calculated to be approximately 14.01 m. According to Note 1 in the petrochemical regulations: D refers to the diameter of the larger adjacent tank; for storage tanks with a volume greater than 1000 cubic meters, the larger value between the diameter and height is taken. The spacing is set at 14.01*0.4=5.6m