FTA: Fault Trees for ISO 26262 — Verifying Safety Goals and Computing Metric Contributions

Date
2027-03-11
Location
Online
Host
Zach L

About this event

A live 30-minute expert session on Fault Trees for ISO 26262 — Verifying Safety Goals and Computing Metric Contributions (FTA — Fault Tree Analysis). What We'll Cover: Where deductive safety analysis is required in ISO 26262 Part 9 and how FTA fills that role at system level The method step by step: top event as safety goal violation, decompose to element faults, connect to hardware metrics and FMEDA results How the tree maps to ASIL decomposition rationale, PMHF contribution and the safety analysis work products of Part 9 Common mistakes: trees that duplicate the FMEA instead of complementing it, missing intended-function faults, ignoring safety mechanism failures The consistency between FTA, FMEDA and safety concept an ISO 26262 assessor cross-checks Related topics: iso 26262 · safety go

Topics

Registration

View event page

About Functional Safety Foundations

This online session delivers expert-led instruction on the regulatory landscape and implementation approach for Functional Safety Foundations.

The cross-sector fundamentals underlying every functional safety standard: risk as severity × likelihood, the safety function concept, integrity levels, the safety lifecycle, and the split between random and systematic failures.

What it regulates

Shared vocabulary and reasoning: hazard → risk → risk reduction allocation → safety requirement → verified implementation → maintained integrity in operation.

Who must comply

Everyone entering the field — the conceptual base of the entire catalog.

Key requirements of Functional Safety Foundations

  • Hazard and risk fundamentals
  • Safety function anatomy: sensor-logic-actuator with defined safe state
  • Integrity ladders (SIL/PL/ASIL/DAL) as risk-reduction currencies
  • Random vs systematic failure treatment
  • Lifecycle and management of functional safety incl. competence

Key concepts: Functional Safety Foundations

Functional safety management
Planning, competence, documentation and assessment wrapped around technical work.
Safe state
The defined condition a function drives the equipment to on demand or fault.
Random vs systematic
Hardware wear-out/chance failures quantified statistically versus design/process errors controlled by rigor.
Risk reduction allocation
Distributing required risk reduction among mechanical design, safeguards, control functions and procedures.

Frequently asked questions: Functional Safety Foundations

Why can't testing alone prove safety?

Rare-event targets (like 1e-7/h) are unverifiable by test duration, and systematic errors evade random testing — hence the standards' dual machinery of quantified hardware analysis plus process rigor and independent assessment.

Standard information based on the published text of Functional Safety Foundations. Event content is provided by the host. For authoritative guidance, consult the official standard body.