ISO 12100: A/B/C Standards — Navigating the Machinery Standards Hierarchy

Date
2026-09-28
Location
Online
Host
Zach L

About this event

A live 30-minute expert session on A/B/C Standards — Navigating the Machinery Standards Hierarchy (ISO 12100 — Machinery Risk Assessment). What We'll Cover: What the A/B/C standards hierarchy is and where ISO 12100 sits as the single type-A standard for machinery safety Step-by-step method for locating the applicable C-standard, checking its scope clause and identifying gaps it does not cover How C-standard compliance maps back to ISO 12100 requirements and the presumption of conformity under harmonised listing Common mistakes: assuming a C-standard covers all hazards, using a withdrawn or non-harmonised edition, ignoring deviations from the C-standard The standards-applied list with editions, scope justification and gap analysis auditors expect in the technical file Related topics: type a b c standards · machinery standards hierarchy · c standards machinery · harmonised standards · presumption of conformity · en iso 12100 · b1 b2 standards · standard scope analysis · official journal listing · standards gap analysis · machinery safety standards map · iso 12100 relationship Critical Systems Analysis provides embedded functional safety consulting for ISO 12100 — Machinery Risk Assessment. 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.