Beginner
New to functional safety? Start here. These articles explain fundamental concepts in IEC 61508 and IEC 61511 in plain language, covering Safety Integrity Levels (SIL), basic risk assessment, proof testing essentials, and how Safety Instrumented Systems protect people and assets. Perfect for engineers transitioning into functional safety or teams needing a solid foundation before tackling advanced topics.
Failure Rates in Functional Safety: A Practical Guide for Working Engineers
Failure rates are central to SIL verification, device selection, diagnostics, and proof testing. This guide explains λDU, λDD, λSU, and…
Spurious Trip Rate Explained: 6 Facts Every Functional Safety Engineer Should Know
Spurious Trip Rate (STR) is often overlooked in functional safety. Learn what STR is, how it’s calculated, and why balancing…How to Use Proof Test Coverage (Cpt) to Improve PFDavg
Proof test coverage (Cpt) plays a major role in determining whether a SIF meets its target SIL. This article explains…PFDavg Explained: 6 Essentials for Getting Started with SIL Calculations
This beginner-friendly guide explains what PFDavg (Probability of Failure on Demand) means in functional safety, how it's calculated, and why…Proof Testing of SIFs: Understanding Its 3 Purposes and Its Importance
Proof testing ensures your Safety Instrumented Functions (SIFs) work when needed by uncovering hidden faults. Learn why proof tests are…
