Functional Safety: Cross-Standard Assessments — One System, IEC 61508, ISO 13849, and IEC 62061 Together

Date
2026-10-13
Location
Online
Host
Zach L
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About this event

A live 30-minute expert session on Cross-Standard Assessments — One System, IEC 61508, ISO 13849, and IEC 62061 Together (FSA & Services — Assessment & Services). What We'll Cover: Why mixed-standard systems arise and where the assessor must fix the governing standard per subsystem Step by step: inventory safety functions, assign each to its standard, translate PL and SIL claims, assess against the assigned framework How PL-to-SIL mapping draws on ISO 13849-1 and IEC 62061 correspondence tables and yields a combined compliance matrix Common findings: double-claiming from two standards, PLd devices assumed SIL 2 without checking architecture constraints Evidence auditors look for: a per-function standard allocation, translated claims with rationale, and one coherent safety file Related topics: pl to sil mapping · iso 13849 iec 62061 comparison · mixed standard system · machinery safety assessment · performance level · safety function inventory · correspondence table · architecture constraints · combined compliance matrix · governing standard · subsystem allocation · safety file · sistema · category and pl Critical Systems Analysis provides embedded functional safety consulting for FSA & Services — Assessment & Services. 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.