Functional Safety

In Functional Safety and SIL assessment, the Risk Reduction Factor (RRF) serves as a key parameter metric, providing a quantitative measure of how much risk must be mitigated to achieve

What is Systematic Capability? Systematic capability (SC) is a measure of the confidence that a safety-related element (hardware or software) meets the requirements of its specified Safety Integrity Level (SIL)

Safe failure fraction is an arbitrary metric used within IEC 61508 (and other guidance) in order to set architectural rules (or constraints). This is a metric based on diagnostic coverage.

Understanding Risk Receptors: Safeguarding People, Environment, and Assets In process safety, the concept of a risk receptor plays a pivotal role in identifying and mitigating potential hazards. A risk receptor

Understanding Mission Time in Reliability Engineering: A Key to System Reliability In reliability engineering, mission time refers to the period during which a system, component, or device is expected to

Modes of Operation of a SIF The demand mode of a Safety Instrumented Function (SIF) refers to the operational mode in which the SIF is activated only when a specific

The safety lifecycle approach recognizes that there are two fundamentally different ways in which the SIS can fail to perform its intended function. These are known as random and systematic

A failure occurs when a device at some level (a system, a unit, a module, or a component) fails to perform its intended function. Each safety instrumented function (SIF) in

A Safety Instrumented System (SIS) is a control system consisting of sensors, one or more controllers (often referred to as logic solvers), and final elements. Another common name is an