In the world of safety and automation, understanding the distinctions between SIL (Safety Integrity Level), SIS (Safety Instrumented System), and SIF (Safety Instrumented Function) is crucial. These concepts form the backbone of ensuring industrial safety, particularly in environments like chemical plants, oil refineries, and other high-risk ...

SIL is the safety integrity level of a particular safety instrumented function (SIF) which is being implemented by a safety instrumented system (SIS). SIL is a measure of risk reduction provided by a specific SIF.

2019年7月25日 · SIL安全完整性等级，是一个量化目标，用于衡量安全功能所需的性能水平，以实现过程危险的可容忍风险。 它在IEC61508和IEC61511中都有定义。 为化工过程定义目标SIL级别应基于对事件发生的可能性和事件后果的评估。 SIL是一个离散级别，用于指定要分配给安全仪表系统的安全仪表功能的安全完整性要求。 SIL4具有最高的安全完整性，SIL1具有最低的安全完整性。 IEC61511仅定义了SIL1至SIL3的要求，因为SIL3是化工过程的最高等级，对 …

The Safety Instrumented Function, whose abbreviation is SIF, is a protection layer whose objective is to achieve or maintain a safe state of the process when a specific dangerous event occurs. The SIF is implemented in the SIS (Safety Instrumented System) which is normally composed of several Safety Functions.

2024年11月24日 · SIF是指为实现特定安全目标而设计的一系列仪表功能，这些功能通过监测、控制或隔离等手段，防止或减轻危险事件的发生。 例如，当系统中的压力超过预设限值时，SIF会触发报警或自动关闭相关阀门，以防止设备损坏或事故扩大。 SIF是安全策略的具体实施者，它直接关联到系统的安全性能。 安全完整性等级（SIL） SIL是对SIS性能的一种量化评估方法，它反映了SIS在执行SIF时所能达到的风险降低程度。 SIL等级通常从1到4，等级越高，表示SIS在防止 …

A SAFETY INSTRUMENTED SYSTEM (SIS) IS A COMBINATION OF ONE OR MORE SAFETY INSTRUMENTED FUNCTIONS (SIFS). Standards IEC 61511 and ANSI/ISA 84.01 have specific requirements for defining the safety instrumented func-tion. These requirements are detailed in the sidebar, “Definition of the SIF in the SRS” in the web-based

2024年11月12日 · SIL（Safety Integrity Level） 是衡量SIS或SIF安全性能的指标。 它依据国际标准（IEC 61508和IEC 61511），将安全要求划分为SIL1至SIL4四个等级，数字越高，安全性越高，失效概率越低。

2023年11月9日 · Safety Instrumented Systems (SIS), Safety Integrity Levels (SIL), and Safety Instrumented Functions (SIF) form the foundation of these processes. Let’s delve into each of them.

Focused on the design of Safety Instrumented Functions (SIF) using the SILcet tool developed by us and following the Standards IEC61508/61511 & ISA TR84. It’s focused on practical examples to learn how to design SIFs, comparing different solutions according to the architectures and the elements used ( Read more ).

Safety Integrity Level (SIL) is a measure of safety system performance – not a measure of process risk. The higher the level of risk, the greater the system performance required. Based on a hazard and risk analysis, each individual Safety Instrumented Function (SIF) is assigned a required performance level, or SIL.