Hazard Assessment and Risk Management for the Manufacturing Process of carbon disulfide
Shin -Jane Wu
|關鍵字:||二硫化碳;ALOHA;後果分析;Carbon disulfide;ALOHA;Consequence analysis|
本研究以某工業區一家生產二硫化碳工廠內危害風險較高的二硫化碳儲槽為對象，使用ALOHA後果分析軟體，模擬二硫化碳儲槽發生破洩時的最嚴重災害情境(worst-case scenario)及其他可能發生情境(alternative-release scenario)之危害影響範圍。
Abstract Carbon disulfide (CS2), a colorless, toxic, highly volatile and flammable liquid chemical compound; which are used extensively in the manufacturing of viscose rayon fibers, cellophane, and carbon tetrachloride. It has the characteristics of toxicity, flammability and explosiveness. If the process is operated and managed improperly, it is extremely likely that poisoning, fire and explosion will occur. In order to prevent the incident from occurring, we need to perform the hazard assessment to find out the potential risks and exercise the process safety management to reduce the risks. In this research we chose the storage tank of a carbon disulfide factory in an industrial zone as the target of study. ALOHA consequence analysis software was used to simulate worst-case scenario and alternative-release scenario from the breaking tank to understand the affected area and the magnitude of the risks. The results indicate that the affected area of the toxic carbon disulfide will go beyond the periphery of the factory. When carbon disulfide is released, the factory director must evacuate residents near the factory as quickly as possible, or persuade them to stay indoor and avoid outdoor activities. The windows should not be opened and the air conditioners must be turned on until the CS2 concentration falls below the safety threshold. The study also shows that the neighbors are not exposed to the risks of thermal radiation and vapor cloud explosion, while these accidents pose risks to the personnel in the factory. Therefore when the storage tank catches fire, we should evacuate workers to the safe areas immediately and control the fire effectively to avoid explosion. In addition to the hazard assessments of the worst-case scenario and the alternative-release scenario, the factory must take the process safety management seriously and establish the emergency response plan to simulate the scenarios that might have happened. Emergency response drill must be scheduled regularly so that worker can handle the incidents rapidly and effectively to reduce the hazards.
|Appears in Collections:||Thesis|
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