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HAZOP/LOPA/SIL Be Careful What You Ask For!

机译:HAZOP / LOPA / SIL请小心您的要求!

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In recent years Process Safety Engineers have promoted the use of HAZOP to identify hazardsand assess safeguards, followed by LOPA to identify if additional protection layers are necessaryand, if they are to be provided using safety instrumented functions, how reliable the SIFs need tobe. Finally SIL verification (reliability analysis) is used to show that the selected SIF sensors,logic and final elements will achieve the required reliability performance for the selected testingregime.Given that the addition of instrumented protection systems to a facility design is often viewed byengineering contractors and operating companies as easier to implement than changes to theoverall process design, it has led to a proliferation of Safety Instrumented Functions/SafetyInstrumented Systems (SIF/SIS), the implications of which industry has yet to fully understand.This paper will discuss some of these implications and makes a number of observationsregarding approaches to improve the integrity of process plants.
机译:近年来,过程安全工程师促进了使用HAZOP来识别危害的方法 并评估保障措施,然后由LOPA确定是否需要额外的保护层 以及,如果要使用安全仪表功能来提供它们,则SIF需要如何可靠 是。最后,通过SIL验证(可靠性分析)可显示所选的SIF传感器, 逻辑和最终元件将达到所选测试所需的可靠性能 政权。 鉴于通常会考虑在设施设计中添加仪表保护系统 工程承包商和运营公司比更改工程更容易实施 在整个过程设计中,它导致了安全仪表功能/安全性的泛滥 仪表系统(SIF / SIS),其含义尚待业界充分了解。 本文将讨论其中的一些含义,并进行一些观察 关于改善加工厂完整性的方法。

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