IEC 61508: FMEDA Step by Step — A SIL 2 Pressure Transmitter Worked Example

Date
2027-03-15
Location
Online
Host
Zach L

About this event

A live 30-minute expert session on FMEDA Step by Step — A SIL 2 Pressure Transmitter Worked Example (IEC 61508 — Functional Safety Foundations). What We'll Cover: What an FMEDA is and where it sits between design and SIL verification in the IEC 61508 lifecycle The core method step by step: failure-mode splits, lambda-SD/SU/DD/DU classification, and diagnostic credit decisions How FMEDA results feed IEC 61508-2 architectural constraints and the failure-rate data in the safety manual Common mistakes: optimistic diagnostic coverage claims, siloed failure-rate databases, and ignoring no-effect failures The FMEDA report traceability an assessor expects: sources for every failure rate and every DC claim Related topics: fmeda · failure modes effects and diagnostic analysis · sil 2 transmitter · dangerous undetected failures · safe failure fraction · diagnostic coverage · pfdavg calculation · iec 61508-2 · failure rate data · fit rates · safety manual · sil verification · component failure modes · lambda du Critical Systems Analysis provides embedded functional safety consulting for IEC 61508 — Functional Safety Foundations. Learn more: https://criticalsystemsanalysis.com Partner with us: https://meetings.hubspot.com/benjamin-twombly/strategic-partnerships

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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.
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.
Safe state
The defined condition a function drives the equipment to on demand or fault.

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.