以本質較安全設計策略探討LED製程氨氮回收系統之研究

Abstract

LED光電產業屬近年快速成長的科技產業之一，但製程原物料或相關廢棄物（包含廢氣、廢水、廢棄物料等）之誤排放或意外事件之後果，已顯然造成工安問題與生態環境之實質影響。目前國內外法規已有相當完善且嚴格之化學品管制與廢棄物排放規範，對於工安的要求也日趨嚴格；因此，如何同時兼顧工安上的要求與降低廢棄物對環境的衝擊，更是眼前重要的課題。 本研究將以某LED光電廠為例，由製程的原料_氨（Ammonia）及其廢棄物_氨氮問題進行切入，並針對該廠設置之「氨氮回收系統」加以探討工安管理問題及其對環保的效益；另外，運用「危害與可操作性分析（HAZOP）」之方法，研討與辨識出所有可能的作業危害，其中分析結果鑑別出19個不可接受與16個可接受但具潛在危害之工安風險；因應前述之分析結果，以「本質較安全設計（Inherently Safer Design, ISD）」的觀點，導入11項設計策略，進而將35個潛在危害因子消除或降低至可接受風險範圍，使該系統不僅能降低環保汙染議題外，更兼具安全操作等工安效益，達到工安及環保雙贏的局面。

Light-Emitting Diode (LED) optoelectronics industry is one of the fast-growing technology industry in recent years , but the process raw materials or related waste (including waste gas , waste water , waste materials, etc.) emission or consequences of misuse of the accident , has apparently caused industrial safety problems and ecological environment of the real impact. At domestic and abroad, a considerable improvement regulations and stringent regulation of chemicals and waste emissions standards has been implemented, and the industrial safety requirements are becoming more stringent ; therefore , how taking into account the safety for workplace requirements and reducing the impact of waste on the environment , are all in front of an important issue. This study will take a LED light plant as an example, investigate its process of raw materials _ammonia, waste_ammonia, nitrogen problems and issues to be explored industrial safety management for the plant set of " ammonia recovery system " for its environmental benefits ; wherein the use of " hazard and operability study (HAZOP) " method , the research and identify all possible hazards of the job , also the result show us 19 unacceptible hazards and 16 acceptible but nearly dangerous hazards. Because of the result, we elaboration preferred coping responses; and finally, to "Inherently Safer Design (ISD)" point of view , ammonia and nitrogen recycling system safety factor which should be considered with the 11 stratages in the design , so that the system can reduce the environmental pollution issues , but also benefit both for the industrial safety design , safe operation , industrial safety and environmental protection to achieve a win-win situation.