簡要介紹了功能安全在SIS 全安全生命周期的主要活動，敘述了全生命周期的功能安全管理。簡要闡述了貫穿于整體安全生命周期的功能安全進行的主要階段，同時提出了在設計SIS 時，應根據SIS 安全要求規范并考慮符合IEC61511 - 1 中所有要求。分析得出：系統的設計集成者將更多地注重于選擇那些在產品設計時已經考慮功能安全，并經制造商和認證機構證明的有安全完整性
等級指標的安全可靠的產品。
關鍵詞：功能安全 安全生命周期 儀表型安全系統
中圖分類號：T-01 文獻標識碼：A
Abstract：Through the brief introduction of major activities of functional safety in overall safety lifecycle of safety instrumented system（SIS），
the functional safety management in overall lifecycle is described. In addition，it is proposed that during SIS design，besides of SIS safety specification，
it is necessary to consider all the requirements conforming IEC61511 - 1. The analysis shows that the designers and integrators of the
systems shall focus on and select the safety and reliable products designed under consideration of functional safety，and certified by manufactures
or authorities with safety integrated level.
Keywords：Functional safety Safety lifecycle Safety instrumented system