Working Paper Article Version 1 This version is not peer-reviewed

# Establishment and Application of Continuous Real–Time Release Model for Storage Tank

Version 1 : Received: 6 July 2019 / Approved: 8 July 2019 / Online: 8 July 2019 (04:34:54 CEST)

How to cite: He, J.; Yang, L.; Li, A.; Zhou, Q.; Zhou, D.; Liu, L.; Yang, D.; Zhan, Y. Establishment and Application of Continuous Real–Time Release Model for Storage Tank. Preprints 2019, 2019070103 He, J.; Yang, L.; Li, A.; Zhou, Q.; Zhou, D.; Liu, L.; Yang, D.; Zhan, Y. Establishment and Application of Continuous Real–Time Release Model for Storage Tank. Preprints 2019, 2019070103

## Abstract

The calculation of the release of liquid hazardous chemicals storage tanks is an important part of the quantitative risk assessment of accidents. This paper mainly establishes a continuous real–time release model based on the instantaneous mass flow Qm model. Meanwhile, the software function module was analyzed, and programming software was developed using C# language for model solving. A series of experiments for repeated leakage tests was designed and the discharges through three small holes with different heights for 200 s were observed. The results show that the continuous real–time leakage model is effective, and the deviation between theoretical and experimental release amounts are within a reasonable range. The higher the liquid level above the leak hole is, and the smaller the height of the leak hole from the ground is, the greater the flow rate at the leak orifice is and the smaller discharge rate change is. Therefore, the deviation between the theoretical release amount Mt and the experimental average release amount Ma is greater while the height of the leak hole from the ground is smaller, which indicates that the smaller the distance from the leak orifice to the ground, the greater the influence of the empirical discharge coefficient C0 on the release amount M.

## Subject Areas

storage tank; continuous real–time; release model; leakage test; hole discharge

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