眾多危害分析方法中,失效模式與影響分析法及失誤樹分析法因其廣泛適用性、分析結果詳細等特點而被普遍採用於分析飛航安全、化工製程與產品服務中。然而在面對現今迅速發展的行業及快速變動的製程,分析團隊經常須以特定事件為分析目標,若採用上述兩方法以傳統方式結合進行分析將會耗費大量時間與人力;另外當目標系統龐大且複雜時,在無電腦軟體輔助資料儲存、傳送與運算之情況下,容易造成分析效率不佳和資料遺失等問題。因此,本研究期望藉改善兩分析方法的結合步驟,並搭配電腦軟體輔助以解決上述問題。 為完成研究目標,本研究修正了上述兩方法傳統結合的步驟,透過失誤樹分析中的定性分析找出最小切割集、定量分析排序其重要度,幫助分析團隊快速聚焦關鍵元件。接著藉由失效模式與影響分析發掘關鍵元件潛在的失效效應並討論其各項失效模式現行的偵測方法、警報設計與處理措施等缺失,提供改善建議予 管理階層做為參考。另外本研究也採用電腦軟體輔助分析進行與資料相互連結。 本研究依此分析方法,針對國內某一太陽能電池廠製程所使用的二乙 基鋅之存放、運輸系統進行安全性分析。研究結果揭示了個案廠兩系統安全設計的潛在問題並提出相對應的安全設計與管理之改善建議。
Failure mode and effects analysis (FMEA) and fault tree analysis (FTA) are widely used to analyze the aviation safety, chemical process, and servicing products because of their broad applicability and detailed outcomes. However, when facing a rapidly evolving industry and spontaneous changes in manufacturing processes, the analysis team often requires setting a specific event for analyzing target, and thus becomes a very time-consuming task if using these two methods in a the traditional combining way. In addition, when the target system is huge and complex, it will become inefficient and could result in possible data lost without the assistance of computer software. Therefore, this study attempts to solve the problems by revising the combination steps of FMEA and FTA as well as the computer software aiding. To achieve the research objectives, the qualitative and quantitative analyses of FTA were performed respectively to find out the most critical components. Then, analysis of FMEA on the current detection methods, alert design, and reaction of each failure mode of critical components were conducted to provide recommendations to improve the safety design and management. Furthermore, an efficient computer software has been used to assist the running of analysis and data interconnection. This study took a solar cell plant in Taiwan as a case and analyzed the safety design and management of two systems which related with a hazardous chemical, Diethylzinc. The result showed the weakness in two systems and safety suggestions presented.
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