UNE-EN ISO 13849-2-2013 PDF

Full title and description

STB UNE-EN ISO 13849-2:2013 — Safety of machinery — Safety-related parts of control systems — Part 2: Validation. This is the Spanish adoption (UNE / AENOR) of ISO 13849-2:2012 and provides requirements and procedures for the validation (by analysis and testing) of safety-related parts of control systems (SRP/CS) designed in accordance with ISO 13849-1.

Abstract

UNE-EN ISO 13849-2:2013 specifies the procedures and conditions to be followed to validate that specified safety functions, the category achieved and the performance level (PL) of safety-related parts of control systems (SRP/CS) meet the design intent and the requirements of ISO 13849-1. Validation covers analysis, testing, required documentation (design rationale) and provisions for fault detection/exclusion; it complements the design requirements given in Part 1.

General information

• Status: Published / Active (Spanish adoption of ISO 13849-2:2012)
• Publication date: 26 June 2013 (UNE/AENOR adoption; original ISO edition published October 2012)
• Publisher: UNE (AENOR — Spanish Association for Standardization and Certification)
• ICS / categories: 13.110 (Safety of machinery)
• Edition / version: UNE-EN ISO 13849-2:2013 — Adoption of ISO 13849-2 (Edition 2, 2012)
• Number of pages: 89 (UNE/AENOR publication format)

Scope

The standard applies to the validation of safety-related parts of control systems (SRP/CS) for machinery: it defines how to demonstrate by analysis and testing that the SRP/CS performs the required safety functions and attains the intended category and performance level. It covers mechanical, pneumatic, hydraulic and electrical implementations of SRP/CS and sets out the required documentation (design rationale), test procedures, fault detection and diagnostic considerations. It does not by itself provide complete validation requirements for complex programmable electronic systems—additional guidance (for example from IEC 61508 or the applicable clauses of ISO 13849-1) may be required for programmable or software-based elements.

Key topics and requirements

• Validation principles: objectives, timing and responsibilities for validation activities.
• Validation by analysis: use of design rationale, calculation, failure data and architectural evidence to support claimed categories and PL.
• Validation by testing: type tests, functional tests, diagnostic tests and routine verification to demonstrate correct behaviour under normal and fault conditions.
• Documentation requirements: design rationale, specification of safety functions, test plans, test reports and evidence of compliance with ISO 13849-1.
• Assessment of category and Performance Level (PL): confirming that the SRP/CS achieves the intended PL and category via combined analysis and testing.
• Fault detection, diagnostic coverage and fault exclusion: guidance on what may be excluded and how exclusions must be justified and documented.
• Limitations for programmable systems: note that further standards (for example IEC 61508) and ISO 13849-1 clauses apply for software/PEA elements.
• Guidance on lifecycle and re-validation: when to re-validate (design changes, updates, incidents) and how to manage validation across the machine lifecycle.

Typical use and users

Primary users are machine designers, safety engineers, control system designers, integrators, conformity assessment bodies and notified bodies responsible for CE marking and machine safety compliance. Secondary users include maintenance teams, technical reviewers and procurement specialists who need to verify that SRP/CS have been validated and documented according to accepted rules.

Related standards

Key related documents include ISO 13849-1 (Part 1: general principles for design), EN/ISO 12100 (risk assessment and general machine safety principles), IEC 62061 (safety of machinery — functional safety of safety-related electrical, electronic and programmable electronic control systems), IEC 61508 (functional safety of electrical/electronic/programmable electronic safety-related systems) and EN 60204-1 (electrical equipment of machines). National adoptions and later revisions of ISO 13849 parts and corrigenda should also be consulted.

Keywords

safety of machinery; SRP/CS; safety-related parts of control systems; validation; performance level (PL); category; design rationale; testing; diagnostic coverage; fault exclusion; ISO 13849-1; AENOR; UNE.

FAQ

Q: What is this standard?

A: UNE-EN ISO 13849-2:2013 is the Spanish (UNE / AENOR) adoption of ISO 13849-2 (Edition 2, 2012). It provides the rules and procedures to validate safety-related parts of control systems so that the specified safety functions, category and performance level are demonstrated by analysis and testing.

Q: What does it cover?

A: It covers validation activities (analysis and testing), required documentation (design rationale, test plans/reports), evaluation of category and performance level, diagnostic and fault considerations, and guidance on re-validation through the machine lifecycle. It applies to mechanical, pneumatic, hydraulic and electrical implementations of SRP/CS; programmable/software elements may require additional standards.

Q: Who typically uses it?

A: Machine manufacturers, safety and control system designers, integrators, conformity assessment bodies, notified bodies and maintenance/engineering personnel engaged in design verification, testing and certification of machinery safety systems.

Q: Is it current or superseded?

A: UNE-EN ISO 13849-2:2013 is the Spanish adoption of ISO 13849-2:2012 (original ISO publication October 2012; UNE adoption 26 June 2013). That edition was reviewed and confirmed in 2018 and has been in use since. As of February 24, 2026, work to revise Part 2 is under way at ISO (a DIS/draft was published in early February 2026), so a revised edition / new adoption at national level is in progress; practitioners should check the latest national standards catalogue or their national standards body for the current legal/adopted version before relying on a specific edition.

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 general design principles and requirements; Part 2 addresses validation. The two parts are intended to be used together when designing and validating SRP/CS.

Q: What are the key keywords?

A: Safety-related parts of control systems (SRP/CS), validation, performance level (PL), category, design rationale, diagnostic coverage, fault exclusion, machine safety, ISO 13849.