Table 5 Under different liquid levels, the leakage of gas corresponds to the required emergency rescue time.

From: Forecasts for the concentration of petroleum gas leakage diffusion under different liquid level heights of a sealing ring of sizeable floating roof tank

Liquid level height

Total Leakage(m3/s)

Emergency rescue time

30% ≤ L ≤ 50%

 > 750

 ≤ 20 s

375 < Q ≤ 750

20 s ≤ t ≤ 40 s

50% ≤ L ≤ 70%

 > 750

 ≤ 30 s

375 < Q ≤ 750

30 s ≤ t ≤ 1 min

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