Overview
ISO/TR 22100-1:2021 - Safety of machinery - Relationship with ISO 12100 - Part 1 explains how the foundational type‑A standard ISO 12100 relates to and is used together with type‑B and type‑C machinery safety standards. This ISO Technical Report guides designers, manufacturers and standards‑writing committees on applying the system of machinery safety standards to achieve tolerable risk through adequate risk reduction. It is the second edition (2021) and complements ISO 12100 by clarifying practical application and navigation of related standards.
Key topics
- Structure of machinery safety standards
- Type‑A: basic safety principles (ISO 12100)
- Type‑B: generic standards for safety aspects (B1) and safeguards (B2)
- Type‑C: machine‑specific safety requirements
- Risk assessment and risk reduction (iterative three‑step method from ISO 12100)
- Determine machine limits (intended use and foreseeable misuse)
- Identify hazards and hazardous situations
- Estimate and evaluate risks
- Decide on and apply elimination or risk reduction measures
- Role of type‑B and type‑C standards
- Type‑B1 (e.g., safety distances, surface temperature) provides data/methods
- Type‑B2 (e.g., interlocks, two‑hand controls) provides performance requirements and verification
- Type‑C specifies detailed requirements for particular machines or machine groups
- Guidance for standards committees
- How to align type‑B and type‑C content with ISO 12100 principles
- Overview of categories of type‑B standards to aid navigation
- Supporting material
- Annex A: iterative process of risk assessment and reduction
- Annex B: types of ISO documents and how they interrelate
Applications and users
ISO/TR 22100-1:2021 is practical for:
- Machine designers and manufacturers seeking to apply ISO 12100 together with relevant type‑B and type‑C standards to design machines that meet tolerable risk criteria.
- Standards writers and technical committees drafting or revising type‑B and type‑C standards to ensure consistency with ISO 12100’s risk assessment strategy.
- Safety engineers and compliance teams who need a clear framework for selecting applicable standards and verifying protective measures.
Practical uses include selecting appropriate type‑B/B1/B2 references, applying the iterative risk assessment workflow, and documenting how protective measures achieve adequate risk reduction.
Related standards
- ISO 12100:2010 - General principles for design - Risk assessment and risk reduction (type‑A)
- ISO 13857 - Example type‑B1 (safety distances)
- ISO 14120 - Example type‑B2 (guards and protective devices)
Keywords: ISO/TR 22100-1:2021, ISO 12100, machinery safety, type‑A type‑B type‑C standards, risk assessment, risk reduction, machine design, safety standards, standards committees.