ISO 13849-2-2012 PDF

Full title and description

ISO 13849-2:2012 — Safety of machinery — Safety-related parts of control systems — Part 2: Validation. This part of ISO 13849 provides the procedures, conditions and documentation requirements for validating safety functions, the achieved category and the performance level (PL) of safety-related parts of control systems (SRP/CS) designed in accordance with ISO 13849-1.

Abstract

Specifies validation by analysis and testing of specified safety functions, the category achieved and the performance level achieved by SRP/CS. Includes guidance on validation planning, general and special fault lists, analysis techniques, test methods, measurement uncertainty, and required validation records and evidence.

General information

• Status: Published (Edition 2, 2012); confirmed current during ISO systematic review but marked for revision.
• Publication date: October 2012 (2012-10).
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 13.110 — Safety of machinery.
• Edition / version: Edition 2 (2012).
• Number of pages: 79 (ISO published edition).

Scope

Provides the validation procedures and conditions to be followed for verification of safety functions, the achieved category and the achieved performance level (PL) of safety‑related parts of control systems designed in accordance with ISO 13849-1. The standard covers validation by analysis and by testing, documentation and evidence required to demonstrate that the SRP/CS meets specified safety requirements; it does not attempt to give complete validation requirements for all programmable electronic systems, which may require reference to other standards.

Key topics and requirements

• Validation planning: preparation of a validation plan and allocation of responsibilities.
• Validation by analysis: techniques for systematic analysis of design and failure modes.
• Validation by testing: test methods, number of test specimens, measurement uncertainty and acceptance criteria.
• Fault lists: use of general and special fault lists to identify relevant faults for validation.
• Documentation and records: required validation records, evidence and design rationale to demonstrate compliance.
• Interaction with ISO 13849-1: establishes how validation demonstrates that the SRP/CS achieves the category and PL claimed under ISO 13849-1.
• Limitations: notes on programmable electronic systems and where additional standards (e.g., IEC 61508 family) may be needed.

Typical use and users

Used by machine designers, safety engineers, functional safety assessors, testing laboratories and conformity assessment bodies to plan and perform validation activities for safety-related control systems. It is applied when documenting evidence that safety functions and claimed categories/PLs have been met, typically during machine design, acceptance testing, and conformity assessment for machinery directives or national regulations.

Related standards

Directly related to ISO 13849-1 (design and performance requirements for SRP/CS). Often used together with sector or technology-specific standards and, for programmable electronic safety-related systems, with standards from the IEC 61508/61511 family and relevant IEC product standards. National/adopted versions such as EN ISO 13849-2 are also commonly referenced in regulatory contexts.

Keywords

Validation, safety-related parts of control systems, SRP/CS, performance level (PL), category, machinery safety, safety functions, analysis, testing, functional safety, ISO 13849-1.

FAQ

Q: What is this standard?

A: ISO 13849-2:2012 is Part 2 of the ISO 13849 series; it specifies procedures and conditions for the validation (by analysis and testing) of safety functions, categories and performance levels for safety-related parts of control systems.

Q: What does it cover?

A: It covers validation planning, analysis techniques, testing methods (including measurement uncertainty and sample sizes), the use of fault lists, and the documentation and records required to show that an SRP/CS meets the safety requirements and claimed category/PL. It notes limitations for some programmable electronic systems where other standards may be required.

Q: Who typically uses it?

A: Machine designers, safety engineers, functional safety assessors, test laboratories, notified bodies and anyone responsible for demonstrating that a machine’s SRP/CS meets its safety performance claims.

Q: Is it current or superseded?

A: ISO 13849-2:2012 is the published edition (Edition 2, October 2012) and was confirmed in ISO’s systematic review process; ISO has indicated a revision (ISO/DIS 13849-2) is under development, so users should check for a newer published edition or a replacement if preparing long‑term compliance documentation.

Q: Is it part of a series?

A: Yes — it is Part 2 of the ISO 13849 series; Part 1 (ISO 13849-1) contains the design and performance requirements (categories and PL calculation) and is used together with Part 2 for a complete approach to SRP/CS safety.

Q: What are the key keywords?

A: Validation, SRP/CS, safety-related parts of control systems, performance level (PL), category, safety functions, analysis, testing, functional safety, ISO 13849-1.