UL 4600: COTS and Legacy Components in an Autonomous Product Safety Case

Date
2026-12-07
Location
Online
Host
Zach L

About this event

A live 30-minute expert session on COTS and Legacy Components in an Autonomous Product Safety Case (UL 4600 — Autonomous Systems Safety). What We'll Cover: Where COTS and legacy elements sit in Part 13 and why 'the supplier says it's fine' is not an argument The core method: characterize the component, bound its role, gather proven-in-use or test evidence, and mitigate unknowns How it maps to UL 4600 COTS clauses and the component safety dossier it produces Common mistakes: proven-in-use claims from a different operational context and silent firmware updates The usage-context comparison and supplier evidence chain an assessor challenges Related topics: cots components · legacy components · proven in use · supplier evidence · component qualification · off the shelf sensors · compute platfor

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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.