| Abstract |
The main ingredient of the liquefied natural gas is methane whose volume will become 600 times at 0˘J and 1 atm. Once little leaking out natural gas mix with air and have the chance to get heat, it will cause a terrible fire and explosion. Or a factory at a neighbor industrial estate has fire and the conductance of heat radiation make the temperature of the reserve tanks of the liquefied natural gas to the point, and there will be a explosion causing by mixing pressure releasing vapor and air. And the gas is lighter than air, so it could be on fire easily even far away from the fire source. Especially in such a high population density and highly developed of the oil and chemistry industry country like Taiwan, the releasing of poison matters might be a serious danger to a workerˇ¦s life and property, Therefore the purpose of the article is to quantify and estimate the risk of the releasing of the liquefied natural gas, and take some necessary emergency to control the damage of environment and personal health.
The article will treat the safety of the LNG station in the process of manufacturing, reserving, and carrying, or the result of that there are some liquefied natural gas release or get fire. We use the software ˇ§ALOHAˇ¨ to analyze the degree of damage, and USA risk management model ˇ§Rmp*Compˇ¨ to simulate the quantity of releasing and the degree of damage. According to the atmosphere condition and assumptive releasing condition, to analyse the worst-case scenario and alternative release scenarios. By considering with the different releasing distance between LNG reserve tanks and affiliated installations, we could have some reference of preliminary emergency to secure people. And we could spray, separate, or use water mitigation system to decease the damage caused by releasing.
We could conclude that the degree of damage is influenced by releasing quantity, releasing condition, and the height of releasing source by simulating many scenarios. We suggest that the source management, maintain, and training plan should be noticed at the same time to reduce the danger. Or we should building emergency center to control the releasing condition and avoid influencing the neighbor a residential area or industrial estate. |
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