Make SIL (safetyintegritylevel) verification of the crude oil station SIF (safety instrumented function) in service by usingreliability block diagram method.Get the random failure SIL and the architecture constraints SIL according to the national standard GB/T 20438, and then integrate both values to take the hardware SIL of safety functions to judge whether the safety functions can meet the SIL.%使用可靠性框图方法对对在役原油站场安全仪表功能(SIF)进行安全完整性等级(SIL)验证计算.根据国家标准GB/T 20438计算回路的随机失效的SIL及结构约束的SIL,综合两者得出安全功能回路的硬件安全完整性等级,判断其是否满足要求的SIL等级.
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