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單一故障

鎖定
單一故障是指一種導致系統或者系統組件在執行其預期安全功能時失效的故障,和任何隨之引發的故障。(a failure which results in the loss of capability of a system or component to perform its intended safety function(s),and any consequential failure(s) which result from it.(IAEA Safety Glossary,Ed.2.0,2006))
中文名
單一故障
外文名
Single Failure
特    點
單一
體    現
安全功能方面
單一故障(Single Failure)
單一性的範圍:由定義可以知道,單一故障的單一性體現在安全功能方面,也就是説單一故障是從功能角度劃分的。
單一故障狀態(Single Failure Condition)(IEC 60601-1)
降低風險的一種方式存在缺陷或發生了一個故障時的狀態。
Condition in which a single means for reducing a RISK is defective or a single abnormal condition is present
單一故障安全(Single Failure Safe)(IEC 60601-1)
醫用電氣設備或其部件,在單一故障條件下,預期的生命週期內發生不可接受的風險是可忽略時的特性。
Characteristic of ME EQUIPMENT or its parts whereby it remains free of unacceptable risk during its EXPECTED SERVICE LIFE under Single Failure Conditions