Abstract
After the occurrence of a hydrogen fluoride leakage accident that triggered massive losses in Gumi, South Korea in 2012, the government and companies have been interested in installing mitigation systems to minimize the loss of a leakage accident. What lacks in previous researches studying mitigation systems is an evaluation of how much a mitigation system can reduce the impact of accidents. Therefore, modeling-based simulations of mitigation systems should be urgently developed to analysis of the performance of a mitigation system. This study aims to design a mitigation system to reduce the amount of materials leaked to the outside when a leakage accident of a storage tank occurs and determine its design specifications through the use of modeling. The basic concept is that when leakage occurs, leakage material in a dike is drained to a remote impoundment installed under the ground, while the material in the storage vessel is transferred to a reserve tank by a pump at the same time. To evaluate the efficacy of the proposed system, two case studies are tested. The simulation results indicate that the proposed mitigation system can contribute to the reduction in the dispersion area for the materials as well as a large reduction in the leakage material.
Highlights
The use of hazardous materials has rapidly increased due to the advent of new hightech industries and the growth of traditional industries
V. and Rota, R. simulated the mitigation barriers to interrupt the travel of liquefied natural gas (LNG) using computational fluid dynamics (CFDs) [9]
Most simulation-based studies have employed computational fluid dynamics (CFDs) and to focus on the gas dispersion and how mitigation systems interrupt the travel of a gas
Summary
The use of hazardous materials has rapidly increased due to the advent of new hightech industries and the growth of traditional industries. A. et al tested fire suppression materials to reduce the radian heat of an LNG pool fire [6] To test these mitigation systems, sufficient space is required. V. and Rota, R. simulated the mitigation barriers to interrupt the travel of LNG using computational fluid dynamics (CFDs) [9]. Most simulation-based studies have employed computational fluid dynamics (CFDs) and to focus on the gas dispersion and how mitigation systems interrupt the travel of a gas. In our previous study [11], a mitigation system in which a reserve vessel is installed next to a storage vessel was proposed In this system, two vessels are connected with a pipe and the chemical material in a storage vessel is moved to a reserve vessel by a pump when leakage occurs, reducing the amount of leakage.
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