Risk, Reliability & Functional Safety Knowledge Base

Should you buy a certified OS or qualify your own for functional safety? Learn the trade-offs, the IEC 61508 requirements, and how to make the right decision for your project.

A structured overview of the most important risk, reliability, and safety analysis techniques — from HAZOP and FMEA to fault trees and Markov analysis.
Whether you are a decision-maker setting strategy or an engineer seeking the right tool for a project, this guide provides a roadmap for navigating the world of risk management.

Job Safety Analysis identifies hazards in work tasks before they cause harm. Learn the JSA process, how it fits into a safety management system, and how to use it effectively.

Event Tree Analysis models the consequences of an initiating event through a series of binary branches. Learn how ETA works, when to use it, and how it supports risk assessment.

The title Certified Specialist has a specific meaning in the Risknowlogy certification framework. Learn what it represents, how it is earned, and why it matters for functional safety professionals.

The Markov technique models system states and transitions to quantify reliability and safety. Learn how it applies to IEC 61508 and when to use it over simpler reliability methods.

HAZOP is a structured technique for identifying hazards in process systems. Learn how HAZOP studies work, what IEC 61882 requires, and how to apply it effectively in your organisation.

HAZID is an early-stage hazard identification technique used in process safety and risk management. Learn how it differs from HAZOP, when to use it, and how to run a HAZID study.

The Spurious Trip Level measures how often a safety system trips without a real hazard. Learn how STL helps balance safety performance with process availability in SIS design.

Cybersecurity and functional safety are increasingly interlinked. Learn how IEC 61508 addresses cybersecurity threats and how to manage both safety and security in one coherent approach.